First of all, don't expect heRO to have these changes. Considering that these changes only came out on the 17th for kRO to test, eA posters already projected these changes to even *start* coming to eA by October 2009, and then you have to go through testing for eA as well. You're well looking for a year in the future if you want these things for private servers unless there's sudden positive changes in the amount of dedicated coders for eA.
ASPD boosting abilities is quite a big plus in ep 13.1, since attack speed of all classes are greatly lowered in order to work with the boosted max stat limit. A lot of casting skills have "irreducible cast time" with a reducible cast time affected by bragi, dex, and etc. Dust's cast time reduction is probably referring to the irreducible cast time part of the skill.
Again, we haven't seen any numbers yet. All of this is so out of the blue right now and pure theory. We still haven't seen what the revised mvp mechanics are. We don't know what revised pvp/woe is like either.