You were good on everything until this. Everything for #1 and #2 were straight from the SRD, and 100% correct. However, with #3 you strayed deeply into the realm of personal opinion, and then actually went against the SRD with your last statement (bolded).
So, also from the SRD: "These saves test your ability to dodge area attacks."
Although they are talking about area attacks, it clearly states a Reflex Save is a dodge, not just jumping for cover. Though personally I'd rule that it could be either a dodge or jumping for cover; with the caveat of not penalizing a character for having to make a save by saying they are now prone behind cover.![]()
I did not say you don't dodge, I said, "dodging a single attack." It's a phrase not a single word. Just as the SRD quote is a phrase, "dodge area attacks."
In my opinion, Reflex Saves are similar enough to defending against touch attacks (avoiding or dodging to keep from being touched), that the mechanic works just as well; and has the benefit of a single resolution mechanic (if used as the OP is considering). Your opinion may differ, but opinion is not the same as fact or rules. I think it's only fair to be clear about an expression of opinion or fact.
Also, a Tazer is not a touch attack. It's either firing barbed contacts that need to hook into the skin (which armor, or even heavy clothing can defeat), or the contacts on the end of the Tazer need to be pressed directly against the target (and again, heavy clothing can defeat or mitigate the effect). In other words: Armor does provide protection, so therefore not a Touch Attack.![]()
Potato/Potato.

As I said earlier, I have no problem with using AC instead of touch AC. I do have issue with using a Reflex save which creates all sorts of potential issues, aside from the fluff. Anyone is free to change the game however they like, doesn't effect me at all. I personally wouldn't make the change in that direction, not with evasion being plentiful and how easy it is to boost your saves. It would be rare for the gamers I play with to even need to roll (yes a 1 wouldn't be auto failure by then thanks to feats, spells, and magic items) against a reflex save by the time Disintegrate enters the picture. A touch attack still has meat through all levels and doesn't get ignored like saves do. I guess incorporeal creatures just got a lot less scary.