expansion idea regarding champions

Frogboy stated that the expansion will change how champions work.  Here's an idea to throw in the mix: give each champion a small quest in line with their backstory that triggers when the champion reaches a certain level.  Then the sov and champ can go on the quest (and bring whoever else along),and when completed, the champion gets some nifty upgrade (traits, weapons, whatever).

edit: still holding out for sieges.