I kinda like the idea of breeding traits for specific things in multiple different branches rather than just having characters that have everything, so I probably wont remove the limit completely.
If your team has been damaged or is low on mana, set up a camp for a while and set your wounded characters to 'Rest' and your mana drained characters to 'Meditate'.
The game is riddled with bugs from ones that can be overlooked there are really glaring and fatal ones as well that I would suggest that should be a priority for your next build.