I'm wondering is there a fight to the finish kind of mod available where players at the start choose the units they want in a 'buy time' then once its up they get no more and cannot reinforce.

The winner being the player or team that completely wipes out the opposing forces?

some mods have point system enabeled. I think ww2mod or realwar.. The minimum his 10.000 up to 40.000.
But all is modable, you can have other values.. and caps for infantry/ armour...

I sugest you get this mods and dig inside