The Leatherman idea of including a bit driver (Vic does something similar on the Cybertools) is not that bad. A driver for standard sized bits would need the space of at least three flathead implements. There could be a holder for exchangeable tools, so you could combine different ones depending on your needs. The C4 punch on the MUT EOD is replaceable. If it was a universal holder you could put for example a ferro rod there instead, since most people don’t need to blow stuff up every day.