Scissors would be helpful, if you need to fix a center serving or knock point. Pliers, if you use one of those metal C knock points or need to remove a knock/point from an arrow.
Wow, I didn't know about this tool, now I have to get one. Are the Allen wrenches held by friction or is there a locking mechanism? This probably constrains the type of tool you can add on this side.
Fantastic work with this little known tool. I just got the Gerber Myth Shotgun tool. I love it's saw, knife and tape measure but I wish I could swap out the choke and pin tool. Now I need this tool too. Lol!