Gary,
  Your idea on a double switch for pitch trim echoes that used on all of the Boeing and Douglas airliners I've flown.  There are two side-by side thumb actuated switches on each yoke and they must be moved together or the trim won't activate.
  I like your flap switch too, and I also like the one Greg Ratajski has on his ES, which also has pre-set positions for UP, T/O and LDG.  For me, I really like having my switch on the stick.  Just goes to show that there's more than one way to skin a cat.
  Skip Slater