The changes were a kick in the teeth until you start to truly understand how much ascension, traits, the extra levels, and team bonuses play a part. It doesn’t amount to a couple stat points, you end up with nearly double the stats (in some configurations) that you would’ve come into the patch with.
Once I started to see how things clicked together, I’ve been enjoying it. I won a PvP match yesterday with a goblin team and I only passed control to the opponent a single time. It was pretty crazy to watch.
I converted about half of my keys and, like you, finished up my collection (other than that darned Sylvasi that I just learned was bugged to drop for a short period and I didn’t acquire it in that window :/). I’m saving my remaining ~1500 keys or so for when the other kingdoms unlock since everything is currently ascended to Epic+ rarity already.
I need to do some reading on traitstone farming and some better soul farming options, but I think the grind will be good.
I’m disappointed that there doesn’t appear to be a way to purchase gem keys if you currently have gem keys. I’d like to stockpile for later.