I do wish this game was a bit more detailed with weapon damage, too. Take shotguns - you end up with one that does 14x30 and one that does 16x27. Yeah, not the most complicated calculation, but it would be nice if it put a "=432" next to it.
And, while I greatly appreciate the firing range, which helps you realize just how much damage that piston that's 48 with explosive damage does vs the one that's a standard 70, but it would be nice if it had a running total. I just put an entire mag into a guy and he lit on fire - did I do more damage than the entire mag of the weapon that does 2.5x damage but no fire?