I had an idea for a new SAK afew years ago...

How about a pair of knives... one general version like an explorer with all the daily need items, and then a companion knife with all the additional tools you don't need daily, such as the saw, spark rod, pliers, locking belt cutter, etc... add this knife when you head into the bush. Maybe even make them lock together or in two colors to easily tell them apart... just a thought.