Sounds good to me - I might think about going partly down this route myself, I can't get on with the switch position on my Explorer either.
I DO use the middle position a bit (not so much on the Explorer, I must admit) and up until recently I wouldn't have thought I could give up the independent volumes. But one of my recent acquisitions (Yamaha Revstar) is a two pickup machine with shared vol/tone - and I haven't missed the independent volumes at all. (Mind you, I am a strat-man at heart, wired as master vol, master tone, oh, and teles as well - so it's not that much of a surprise, I guess)
Kill-switch, er... yeah, I wouldn't use it meself... Never tried wiring a pickup straight to jack, either - but I can see how it would be useful.