Dps loss to the druid but an enormous raid wide benefit that all melee+ranged gain through that added hit aswell as tanks

Yes, so just add it in to the rotation when it's about to fall off. Why the attitude when you are asking other people to do your raid member's work for him?

I have always wondered how people are able to determine whether their wrath casts crit before they are going to cast another spell. For example, I see some people say, "I cast wrath until I proc Nature's grace, then I cast starfire. The problem I'm having is that, since wrath is a missle type spell, I will not know if it crits right away, you have to wait until it hits the mob. Therefore, I am already casting another wrath and approximately .7 secs into the cast until I realize it crit. At that time it would be impracticable to stop my 1/2 done cast and replace it with a starfire. This issue is obviously something that many people have encountered since the beginning of wow I just have never found a solution to the problem.
The only solution I could think of was to stand right next to the mob you are attacking, but almost in every case, there is a good reason why you stay 40 or so yards away from a mob. Does the combat log register the damage done to the mob as soon as the cast is complete even though the actual spell hasn't finished it's animation and made contact with the mob? If the combat log doesn't show it, is there a mod that will show it? I run wow generally at 110ms so the lag shouldn't be that bad. What i don't see is the nature's Grace proc buff until the spell has actually hit the mob. Could that just be lag, my crappy reaction time or do you need a mod to see the buff right when the cast is done.
What would make perfect sense is to make a macro such as this, and bind it to one key.
/cast wrath
/cast starfire [when the buff nature's grace is on]

Eventually, when I have better gear I wont be casting wrath at all, but for 5 mans, trash and farming it would always help too. I can't believe that I haven't found this info yet and I'm surprised that Blizzard would make wrath a missile type spell with a talent such as nature's grace. If someone has a macro such as that, thats a little cleaner than mine :p, could you post it? Also, could someone include the idol swapping macro into that macro??

NG procs immediately, so you know if your wrath will crit when it lands the moment you get done casting it. Switching to SF when that happens seems like it still wouldn't be much of a win, though, since you're probably introducing a fair amount of reaction time into the process.

Edit: you're != your, sigh

Rawr is doing wierd things for me...it's showing me gem-layouts that are higher on its little dmg graphs then my reckless pyrestone ones, but then even when I "equip" them in rawr, my DPS in my spell rotations goes down ? ...and it seems to love giving these high ratings to +10 spi and +10 int gems? How can those ever be better then +dmg stuff?

You're going OOM.

A good trick for any of these theorycraft programs(or spreadsheets) is to set your shadow priest as giving you 5000mp5. This way it won't calculate mana into things. This keeps the gear in the proper order that you would expect.

I have a semi- on-topic question that arose a few minutes ago.

Moonfire has a DD Coefficient of 14.87%, and a DoT Coefficient of 52.24%. With 2t6 we observe a 5th tick, at the same amount of damage as a regular Moonfire. Is it safe to say that 2t6 increases the DoT coefficient by 25% of itself?

What I'm asking is, does 2t6 increase the DoT coefficient to 65.3%, for a total coefficient of 80.17%?

without 2T6 u get 4 ticks with a 13.02% coefficient each, totalling to 4x 13.02% = 52.09% on the DoT part
with 2T6 u get 5 ticks with a 13.02% coefficient each, totalling to 5x 13.02% = 65.12% on the DoT part

together with the 14.95% from the DD that's 80.07% total. but keep in mind - DD can crit, DoT not.

Setting the fight too short is not recommended, because I have seen personally that it is STILL possible to be OOM in the calculations even with a fight length as short as 1 min. I know that doesn't sound logical, but it's true. Therefore, the "officially supported" method of eliminating mana questions is to use the new Raw DPS feature.

The current spreadsheet you have up seems to work rather well. I think the only issues I have with it are that it doesn't have the updated mana regen, and that it doesn't seem to be able to use my trinkets and drums. With my trinkets used in cunjunction with my drums, I think my IS,MF,wrathx(6-7) rotation comes out to do more dps.