Great Post as usual Carl...
yup, at the end, the simple 58mm classic would out live all the other SAKs... no functions or tools on the classic would become obsolete... nails would always need some filing, the small knife is a life safer on some situation, and the small scissor is well desigan and mega usefull... not to mention T&T...
the great thing is that carrying a SAK is only limited by the user creativity... most of the time i use the can opener or bottle opener is for the usefull screwdriver tips, to pry open something or doing things that would save the main blades.
i dont use saw and file alot, but i've been in some situation that i glad that i carry a craftsman... so i could cut a brach to make a walking stick or fixing some componets that need some filing in the midle of no where.
SAKs would not get obsolate, they would become vitage and classic hehehe...