I honestly don't have any ideas what the changes will be but I don't feel like they will be drastic or as game changing as everyone is implying. It will likely be small tweaks. The AST is in a decent place at this point. The only real issue is Noct sect for PVE but TBH the people wanting this to compete with scholar are kidding themselves. I just don't see that happening and even if it does happen on a level of shield output, the SCH will still be the king of healing/dps and the go to for that in raids. Ultimately what the game needs to compete with sch is another native dps/heal class. But we prob won't see this until 4.0.