If we are looking at 1.0 to 2.0 and all the way to 3.0, there have been many changes made, especially towards tank and heals. Some were worse than others, but some weren't that bad to be honest. I still miss my 2.0 str tank, and even tho SE adjusted Vit/Str, still isn't the same and that was one of the changes that weren't necessary. Giving SCH with 3.0 a group heal wasn't necessary either, we did just fine in 2.0 with the fairy being the only one that had a aoe heal/buff. I know some people hated that because it was weaker than medica/medica II, however we did just fine, looking back so many pf's didn't want WHM's and solo heal scholar was a thing, not just for general content but also for a couple of raid content. To be honest, I am looking forward to the changes we are getting with 4.0, I doubt it could be any worse, but lets just see what happens. Definitely nothing to get worked up over or at least not yet.