Native is probably the right answer for a heck of a lot of people. The less you have to muck around, the better.
I like your concept here but on practical level, I've found PS doesn't handle a small percentage of displays in native TRC as well as when calibrated to 2.2.
If you have 3 displays (different brands) that are, lets say, calibrated to Gamma 1.0, 2.2 and 3.0, PS displays the same image differently on these displays. If they are all calibrated to native they are different (since the native gammas are different). If the are all calibrated to the same TRC they all look the same (at least as far as density goes). So that predicitable consistency is important to me. Native gamma calibration works really well in many situations but I think it's dangerous to recommend it as a policy to the masses.
On a practical level, I think it's productive to encourage the masses to start by calibrating to 2.2 customizing the white and black points to match the printing process. Just getting that far is a challenge for many! People overlook the importance of customizing the white and black points and good lighting. Worrying about TRC and other minutia when they haven't mastered the basics is an all too common mistake. Only once they've mastered these things should the gear heads consider experimenting with native and L*. With the white and black points properly customized I've personally only found L* practical for silver halide users.