Most user doesn't notice the str,agi, int was re-written into soul, wisdom.... it would be change to the hive battlefield format once we have sufficient concept.
the main reason why i limit it into 3 per user is because
1) It save the developer team the time to browse through all those concept and focus on much important matter.
2) It was a complete waste of time and talent of the user just to focus countless of concept at himself, while he/she could use the time on thinking a much better concept for item, system and etc etc.
3) If the biography doesn't fit or the author itself doesn't like it after a period of time or wanted change, it could be change at the next version. The same goes to ability as well, it could be scrap and change from time to time, thus it isn't entirely necessary to do make soo much concept.