Well, thanks to our exploit in the Titan Raid, Totem's effects won't stack anymore. However, they're substantially increasing the boosts. I'm very likely going to respec my Totem with this. While this will definitely affect things like Titan Raid (assuming they don't fix the turn order problems there), honestly, I think this is a positive change, making Totem more useful.
@Tyroz - some skills currently affect a single ally, some multiple allies and enemies. Is that changing at all? Also, some skills give a damage buff, but you listed a power buff in the changes. Which stat is being effected- strength or damage?
Here's a side-by-side breakdown of the changes (assuming single/multiple is unchanged):