I have really appreciated the new Leathermans where they mill a thumb ramp into the serrated OH blades. I usually don't have an issue locating the specific tools on a multi other than that, but that';s probably from years of experience with SAKs. Often times if I loan a SAK to someone the first question they ask is which one is the screwdriver/blade/saw or whatever they are looking for, so I am certain lots of people out there could benefit from a color code. Maybe red for sharps, green for benign tools like magnifiers, blue for can/bottle openers?
Def