We had a thread not too long ago about people getting confused by the differing firearms, USP v. Glock differences, etc. Solution seemed to be tagging each gun with a code to let people know what sort of weapon it is.
Adding more guns for the sake of having more guns can be neat–Jagged Alliance 2 1.13 has shitloads of them already and quite a few pages of gun requests. Problem is, they’ve got a finished codebase and are basically working to expand mod functionality. DDA seems like it’s got a ways to go before it reaches that point.
(There is the whole “graphics” thing, too. Tougher to get mixed up when they show you a picture of the gun.)
Short version I’m not unsympathetic but I’m not sure this is the best time to add additional pistols, etc for the sake thereof. If for some reason a new pistol had to come in, I’d suggest something like the Glock 18* or Beretta 93R: a handgun with burst capability.
*I think the 18’s got a three-shot burst?