I peronally don't carry numerous kits. I have survival gear on my person. Sometimes in a PSK like Doug's PSP or something I made up. After that I dont' make up addtional kits to carry; I just add the gear I need. One exception is a FAK.

There was a time when I used to hike with the "kitchen sink". I used to backpack with huge packs full of all kinds of gear and back up gear. Then I started climbing and mountaineering in the Sierra and had to learn the fast and light approach. You just can't cover enough ground carrying a lot of weight.
Much our or "survival gear" is emergency stuff that we don't use regularly. In many cases I am willing to go without much of it.
As long as I can get warm, get shelter from the elements, get water and signal I am happy. Maybe it comes from the climbing ethos but gear does not always replace skill and knowledge.