Stat boosting's going to be a trickier one to fix, as changing whether the achievement engine checks base or boosted stats requires another engine build, and there won't be any more server-side engine releases this year.
In terms of data-side interim solutions, I can see two options, but neither of them are pretty:
remove stat pre-reqs from every achievement (which means you won't have the information available to know what skill level you need to complete the achievement)
treat all the stat prereqs as complete regardless of their actual state (which means they'd be crossed out even when your stat isn't high enough, but at least you'd be able to see what the stat prereqs are)