Technically you can execute earlier but I think this actually may have some adverse effects you may not have given consideration to yet. The one who gazes reminded me that this batching thing may not be limited to just your actions and the actions of your enemies, but because of how blizzard has this set up it could be both a massive blessing and a colossal curse. Really they might need a couple of resolution loops to deal with the situation because of how very different Vanilla servers and clients were compared to what we have now. I assure you the meta now VS then is similar in terms of what you can do and get away with, but there are things that were possible in Vanilla that don’t work that way any more because of how the batching thing acts, however on the same coin there are things you can do now that were simply not possible in Vanilla.
So lets say for a moment that blizzard flawlessly duplicated the vanilla client, and servers and put those up instead and on patch day that’s what we got… No one is the wiser, I can tell ya that there are a few present tricks that would not work any longer, but there would be a few that I could use again. Its a mixed bag for several classes if you know where to look. I don’t want to spoil all the fun, nor do I want to popularize certain things that are questionable in terms of “is this an exploit?”, but they do raise some serious questions.
Thus far on the PTR things do feel really good, but I just havent got enough time on it to know any better, ill go do some testing and with any luck we can all provide some really good feedback that Blizzard may consider?
What I am saying is that even though I like the feel of the PTR the OP has a point, and He who Gazes has reminded me of my roots, that sly devil.