sigfile
Explorer
Nah, it's because the character data is getting housed on WotC servers, and giving every user the ability to consume infinite space on those servers is a bad plan. Paolo goes in to it a bit here.Yet many of those same people are complaining because of the 20 character limit, etc. which is likely being implemented in part because of people sharing accounts.
I wouldn't be overly shocked to see the character limit bump up a bit after the initial release.