By looking at this thread one can see that at 85 the exp rating needed per 1exp is 30.0272, which means the soft cap is 780.7072 rating or roughly 781 rating

Np, at the bottom of the OP it now says 781 atleast

Is Mind Freeze still at spell hit cap? Or is it on melee hit cap but the 3% extra hit from DW Frost don't apply? Because I noticed that it misses sometimes.

My Guild downed/progressed so far on 7 Bosses in the new raiding content in 10-man and I noticed that interrupting is very important on some of the fights. In one Halfus Wyrmbreaker attempt I was assigned to interrupt his Shadow Nova. My Mind Freeze missed 3 times in this fight, which led to a wipe due to healers not keeping up. We then assigned a warrior to do the interrupting and downed him shortly after.

Yes, Mind Freeze is still on spell hit. Respeccing into Virulence and Endless Winter is basically a necessity on that fight.

Gear depending, you might also have to do some reforging, or eat some hit food.

Everyone so far has contested the priorities given by Consider by saying you should be using Rime procs in lieu of KM Oblits. If that was the case, it would have been stated in the OP. He mentions that you should never Oblit back-to-back with a Rime proc, but this very situational.

The fact of the matter remains that, at current gear levels, KM Oblit does much, much more damage than any other abilities that can be used in the same GCD. Moreover, with lower levels of mastery, the impact of using a Rime HB is much lower.

There is also a key issue here where wasting a potential Rime proc is still less important than keeping your runes refreshing through using rune-based abilities. With higher Blood Tap uptime granted with talents, the value of Obliterate increases in your rotation. Sitting on death runes during Blood Tap is a potentially large DPS loss as it could prevent you from squeezing in an extra Obliterate during the window BT is up.

I think in the case of KM Oblit vs. Rime, it's entirely situational. If your diseases are about to fall off and Outbreak is down, Rime makes more sense. If you are nearing max RP, KM Oblit followed by FS > HB would be better since it moves your runes along without wasting significant RP. If diseases are at full duration with low RP and only UF runes up, Rime > KM Oblit. There is an endless bevy of situations you could create here.

If I were to create a generalized rotation for DW Frost, you would try to prioritize rune abilities (maximizing death rune uptime) while not capping RP and allowing Rime to bridge any gaps in disease uptime and open GCDs.

From testing with Kahorie's, I believe it should be noted to use Razorice as 2h before you have 4piece t11 because it is performing better in-game and on the sim than Fallen Crusader without 4piece by about 5%

No matter what gear set-up I use and no matter how much tweaking I do, I can't get the sim to show RI as superior, and without any proof on your part, there's no reason for anyone to trust your word, especially when simple napkin math and common sense shows that it's extremely unlikely RI wins:

About 55% of 2H Frost's damage is, well, Frost. Thus RI, at most, gives 5.5% dps (less, in reality, due to the stacking component of it in combination with target switching and what have you). The minor auto-attack damage boost is less than 0.5%, and hardly worth mentioning, but giving the rune as a whole the benefit of the doubt, let's just say it rounds it up to a 6% dps boost.

RotFC's uptime will vary but, for simplicity's sake, let's say it's 66%, meaning it gives approximately 10% strength. In a mix of 346 blues and 359 epics, you're going to have about 4.5k strength unbuffed. Horn of Winter, Mark, food, and flask will bring this up to about 5700. This means RotFC is giving you approximately 570 strength which, at about 2.3 dps per point, equals out to 1311 dps.

Thus, unless you're doing !22k unbuffed single-target dps in that so-so gear, FC wins out pretty clearly and the fact of the matter is that you're not going to be doing even close to that much on a single target as 2H frost at that gear level.

Besides, RI is only just barely above a 5% dps boost in itself... for it to be beating RotFC would mean the latter would have to be completely worthless! Even if RI were coming out ahead of FC, it definitely wouldn't be doing so by that large a margin.

Perhaps in greens or some such nonsense RI is superior, but this isn't the place to discuss such matters, and it's pointless to try to theorycraft at such low and meaningless gear levels.

If I was to point my finger at something I would say the sim is bugged, either FC is not being applied at all or our melee strikes aren't getting the benefit of it.

When you change from FC to RI, the only damage that changes is frost damage and that shouldn't be the case, all our strikes/diseases should change, because RI only benefits our frost strikes while FC is good for every thing.

It's a sim bug. I just have checked, and Fallen crusader buff only affect ghoul strength. Don't ask me why, I don't have yet investigate.
edit:
I have found the issue and uploaded the correction. The issue was that the sim didn't update the AP value of the character only on pure AP proc and not on Strength proc. This was a recent issue since I did made a change in that part of the code few days ago when I did include the 4 piece T11 proc.

Regarding Spellhit: I used the sim to check what should be possible with my current gearsetup and noticed a very high EP value of 0.9 for spellhit, wich is even higher than hit to melee cap. I redid the sim with Considers BIS list for dw-Frost and noticed the same high value for spellhit. Is this some kind of bug with the simulator? Seems like shifting points between imp. Bloodtap and Virulence doesn't seem to change anything, as dps and EP-Values stay exactly the same. Yet skipping some hit to crit reforging does result in higher dps.

It's not outdated, it's simply talking specifically in raids (which, unless specifically noted otherwise, applies to the whole thread; although I understand heroics are, of course, where people are likely spending the majority of their PvE time in at the moment, it's temporary, they're not terribly challenging to begin with, and it's impossible to min-max in them due to all the additional variables - group composition being a huge one. Raids are ultimately what matter, even for the more casual out there). If you're having threat issues in raids, something is up with your tank (or you're accidentally in Blood Presence!). In heroics, however, with Howling Blast being what it is, pulling aggro is a definite possibility (if not a certain reality).

As to how to deal with it, there's not really any tools you have aside from Hungering Cold (which, glyphed, is pretty solid in such situations) or CoI (which is going to kill your dps, but better than killing you). Otherwise, just up to the tank.