One thing I don't like about KotOR is missing with blasters and stuff. What would be the easiest item to mod to make your character have say an extra +8 (to the roll, so 16 points) dexterity? That way your damage would be the same but you have a higher (but still not definite) chance of hitting.

My original idea was to just add the attack bonus onto the weapons, but then ofcourse I'd have to mod every blaster. I could just add +16 dexterity to something but then I'd reach the max dex bonus too quickly...

The file you wan to edit is baseitems.2da. That will give you the best results and pretty much what you want to do. You can change all classes of pistols and rifles.

And Bith musical weapons.