How is character development going to be balanced? This is an issue that sort of plagued world of warcraft for quite some time, so much so that the entire talent system has been rework so players had to actually make meaningful choices.
Can perks or other customisation points be refunded? Characters reset? With the current gaming crowed I fear that "sub-optimal" builds would be frowned upon, and "elitists" might give players a bad time due to how they customise their character, this in turn would also affect how encounters are tuned for dungeons, would they be low enough so players with sub optimal build could clear them, and alienate players that wants a challenge who have optimal builds? Or tune them to optimal builds and create a rift between the "hardcoe" and "casual" gamers?
Now for the suggestion, can we for the love of god have an ID system for each account? Like battle net did with starcraft 2, that way 2 or more players could have the same character name, please.