Agree,
I would like to see statistics of my team members. How many enemies they killed, how many of each type. How many damage they dealed etc.
I also agree with pets leveling.
Interesting would be also some table like in X-COM. Lost team members, how many battles they fought on my side, when they died. How many kills. What level they had. Some basic table with the most important stats.
Yes, I purchased the game at the very beginning and asked this both here and on Steam, Devs said it would come, it is something I really miss in this game to be honest. AS well for lost members.