Originally Posted by
Polarthief
Short Answer: No you don't care, regardless of your Haste.
Long Answer: The optimal "Surgeweaving" rotation (as it's been coined by the community) is to maximize the amount of Starsurges you can cast, that's it. Your entire goal is to get as much AsP as you can (which is why 30% Haste is really good to get because 2x SW (20 AsP) > 1x LS (15 AsP)) to keep your ED buff up as long as possible. An empowered spell is significantly weaker than Starsurge, so you don't care about it, whereas a non-ED rotation doesn't get nearly as many Starsurges, so it's ideal not to waste an Empowerment (though wasting Astral Power is still worse than losing an Empowerment), but when you're generating stupid amounts of Empowerments, they're not nearly as useful.
This is why if you're under 30% Haste, you do SS > LS > SS > LS, and just waste the hell out of your Solar Empowerments. Not only will this result in a much shorter ED uptime (due to only 15 AsP per SS instead of 20), but the filler damage is also weaker (2x SW > 1x LS in terms of both damage and AsP). Now if we could ever get enough Haste to fit a SW and LS between each SS, the entire rotation would just be getting to ~70 or so AsP and going SS > LS SW > SS > LS SW > repeat, which would result in not only positive (and wasted) AsP, but you wouldn't be wasting nearly as many Empowerments since you'd be using both between each SS, but this requires 56.7% Haste.