Well it can't go forever in RPB if you take into consideration the stamina of the characters, and the power and speed of attacks. No character has an infinite supply of stamina so they will either die or pass out eventually.

And as for character sheets, if you don't mind me doing so I'll pm you a template to see what you think. and with a character sheet section it would probably help to organise the character sheets too for RPB and other rp. Just my opinion really.