a finer Phillips driver?
This probably has my vote. One about the size of the end of the 58 mm combo tool would be good.The problem with Allen wrenches or Torx wrenches (IMO) is that there are so many different sizes. Unless you have a specific pre-determined use case, carrying only 1-3 of these and hoping you’ll have the right size when needed seems like a crap shoot at best.Contrast with flat or Phillips screwdrivers, where 2-3 sizes are likely to cover virtually all screws of that type most people would typically encounter.
The long nail file is a cool idea and a tool lacking on the bigger SAKs. I like the one on my old Champion.