In my opinion there is too little traits and disadvantages available in faction and champion creation. It is just too little for me, so I would like to ask for somewhat community driven project to create a big database of traits.

From the start I can suggest adding injuries to champion editor. Who said he can not have some old war injury

Also I came up with few more weaknesses:

Lame - -2 to move on battle map (+1)
Pathetic Commander - -10% army initiative (+1)
Useless Commander - -20% army initiative (+2)
Incompetent Attacker - -10% army attack (+1)
Useless Attacker - -20% army attack (+2)
Incompetent Defender - -10% army defense (+1)
Useless Defender - -20% army defense (+2)
Lazy - -10% Tax Income -1 to move on battle map (+1)
Indolent Lump - -20% Tax Income -2 to move on battle map (+2)
Bad Eyesight - -10% sight range (+1)
Nearly Blind - -20% sight range (+2)