Okay real talk here, the buff for AST will most likely be negligible. While I do agree that Square sucks at balancing the healers, they are not thaaaaat unbalanced. Sure, there are healers that shine more than others, sure AST might bring a few more things to the table, but at least all three healers can be brought to any content and clear it. If your group is forcing you to switch from WHM to AST because 'WHM is holding you back' I hate to break it to you, its not the class its something else. Are they whining for those dps buffs from cards? Is those little bursts of dps so vital to the group that the dps can't bring the out put needed between their debuffs and buffs? Ya, sounds like its not your problem but theirs. Sounds to me that they need to either a. get better gear or b. go visit a training dummy. And I do remember 3.4 AST buff, it was stupid and the community was stupid. I was a SCH main and I still remember going into content with ASTs who told me they were going to stay in noct stance cuz my shields were garbage now. They were on the same level of stupidity as the groups that wouldn't take WHMs in the pf. Because truth be told, even in 3.4 WHMs were still completing content and groups were still getting past savage and Sophia EX regularly. And that is because the unbalance in healers is negligible in this game. If you cannot clear something with a WHM and SCH then its on player skill and not the balancing issue.
But also real talk, its rather annoying AST is getting a buff. Hopefully its nothing doing with potency. Cuz seriously if it is all I can say is square wtf?
And also its stuff like this that makes me never wanna see another healing class enter ffxiv.