My main gripe against the Pinus eldarica (Afghan pine) is that they don't have the vitality and energetic growth that is comparable to the Black pine. So, the black pine outperforms it in every aspect that I can think of. Slow to back-bud, slow to respond to pruning, lots of weak shoots that eventually die back.
Having said that, it could be that we just don't know enough about this species, and fail to give them the optimal conditions, so we treat them just like a black pine. I don't see a problem with needle length, it is comparable to black pine (mine is actually shorter), so as long as it responds well to needle plucking and fine ramification (which I don't know, since I am still in the trunk-building stage), that shouldn't be an issue.
But it can handle heat well, so in Arizona it may be a good choice. With the Phoenix heat severely limiting the choices you guys have, any plant that can survive is a good addition. So, I would encourage people to experiment with it, in order to expand our bonsai choices and add diversity.