Except that the creature's targeting ring tends to be the first thing that is obliterated by the thousands of spell effects popped by zealous players. I'm not a big fan of the feature but if they do implement it I'd prefer they did it right. Personally the ideal situation seems to be exposing target direction in the lua api so people can just write an add-on for it.

Regarding shadowblades:

Considering it essentially turns combat's rotation into mut's rotation, will it end up being better to use 4cp Eviscerates, or waste the extra combo point and get 5.

Except for fights involving extreme amounts of target swapping, you'll be using Anticipation as your level 90 talent and therefore the extra combo points can't be wasted and you'll be able to always do 5 point finishers.

We will need simulations or someone to math this out once the numbers settle down to be sure about this. Remember that mutilate costs a lot of energy, and assassination has less energy than combat, and the scaling is different as combat's mastery does not matter for finishers, but revealing strike does.

We don't know how anticipation works. We ASSUME it intelligently makes combo points carry over, but the wording "When one of your attacks generates a combo point on a target that already has 5 combo points, you gain a charge..." could mean that SSing at 4 gives you 5, and no charge (because you didn't do an attack that generates a combo point on a target with 5). It could also mean that SSing at 5 combo points during shadow blades and having the 20% extra combo point proc gives you one charge instead of three. I'm pretty sure we don't know yet, at least. And even if it does work the way it should, we have to handle the rotation for the few times we benefit more from a talent besides anticipation, if those exist- and they will in pvp, if nowhere else.

Anticipation (Anticipation - Spell - World of Warcraft) should solve this Problem. Due the RvS Change you will get realy often in this Situation in MoP.

Regarding Crimson Tempest, at the moment it duplicates with Blade Flurry, so the Target get 2 Crimson Tempest hits an the Blade Flurry Target gets all Crimson Tempest hits (like FoK in Wotlk). Example Pic of what i mean.

In LK, I was pretty sure fan worked with blade flurry like this: Fan hit all your targets, and the single fan hit that hit your primary target got forked by the blade flurry onto the second target. So all targets except secondary got hit by fan, secondary got hit by fan and also the forked fan strike from primary. Was it really as good as you say?

Blade flurry could trigger off multiple fan hits, provided you were in melee range of something for it to hit. One of the common strats for maximized dps on Heroic Anub was positioning yourself in a way that Fan would hit all 4 adds and Anub, but you were only close enough to Anub so that all the blade flurry hits would hit him instead of the adds.

I don't remember the FoK hits being guaranteed to all BF to the same target. Certainly if it was the only target in range (note that the range of BF (5 yards) is less than the range of FoK (8 yards) it would get all the hits, but I don't know that that was guaranteed if their were multiple targets within range.

Is there any reason it would behave differently than that? You can game which target blade flurry hits to a small degree, but it doesn't swap around unless another factor changes - meaning either you or the pack of mobs move. I don't recall having tested it empirically, but that's certainly the behavior I remember *believing* I saw.

I would not expect blade flurry to fork all aoe, actually, going forward. Copying one, or to a limited extent, or even doubling the fan damage done, would all be defensible in some fashion, but anything beyond copying a single fan would likely make combat pull ahead of the other specs in pve, and even possible have some downsides in medium scale pvp.

Remember that blade flurry, back at level 80, was a cooldown- it wasn't something active all the time. The purpose and use of blade flurry in current content seems pretty clear, and I'd think that's worth keeping- having strange interactions with aoe moves could definitely have downsides, balance wise.

Speaking of energy regen I must admit I still find the SS glyph somewhat clunky. At the risk of wish-lishting, managing an excess of energy could easily be turned into a signature rotation challenge for combat with whatever skill (Tricks?) increasing energy cost and ability damage by X% either as a toggle or for a fixed time period. Modifying the energy to damage ratio via a glyph might add depth to optimization tools, but adds very little to actual gameplay.