I actually liked the sewer trials. After all those years struggling to level those lowbies created by my alt-it is, being able to run new characters through a fun, quick trial for exp was a relief. There are still so many power sets I didn't get to fully explore even though I started playing the game in beta and kept playing until the servers shut down. I never did reach my goal of having at least 1 level 40 from each of the 10 base archetypes but I came a lot closer with the addition of the fun new power sets and faster low level experience.
I thought the trainers as tailors was a little silly. It was nice to be able to access the market remotely though. Using Wentworths was a mini-game in itself. I haven't really been involved in the CO market much. Its just not the same.
I loved that the fitness pool went inherent. For years I griped about it to myself, as I played just about any melee character and a few others as well, that it should be inherent and they went and did it! Most of the changes were all the things I wanted and my love for the game deepened more and more. Just reading these posts makes me home sick for CoH even though its been more than a year since the closure announcement was made.
The worst part is that even if we could get the game back, I had so many heroes and villains I'd have to recreate the task is daunting.