Team choice bound to model color creates gameplay issues
...in combination with allowing color forcing in team-based modes. This becomes problematic when forcing enemy model colors to your own, because the team you're on will always have the same color as the enemies when choosing red or blue. Less significantly, this can result in too little contrast between teammates' colors and enemies' colors.
What do you mean exactly with "Team choice bound to model color"?
Changing your player color in the menu (or via color command) will switch your team in teamplay modes. This behaviour is unexpected.
Not sure how it would affect forcing colors though, that's client side.