I've been playing a commercial mmo for quite a few months, now. And before I get all the

emotes over and over, I will tell you that I understand that. I just want to voice concern that the game will go in a direction that I think will be a success. That out of the way, comment away.
Balancing of abilities-There needs to be a way to limit abilities in the game. I can be super strong and kill everything, get strong armor and learn to wear it and take a hit, and I can heal myself. What do I need well coordinated team for? We could take down things faster, but we would just take care of ourselves in that team and not each other.
There needs to be a limit on the number of abilities that can be at high levels, depending on what balances the most. There should be options to change back to where you were before with some sort of penalty, whether you need to wait a specified time, paying money, a certain quest chain, etc.
I would also like to see combat and out of combat stats separated somehow. I should not need to max out my physical stats, just to be able to carry gear and not have to stop every other minute if I plan to be a magic user. I'm sure that my character would be able to run for a longer period of time if they are running all over hydlaa all the time. Same for lugging all of my gear.