Instead of adding or changing bot types, I'd rather improve their AI if it were possible. In singleplayer or in some mods, bots can block in all directions and, at the same time, spam attacks. In DTV we came from spam but no blocking to blocking but no spam.
I think that automatic/manual blocking rule in server affects this, but I could be wrong. It would be cool to see bots spamming attacks and blocking properly all together.