Having been taught to fly, and then flew, AOA as a primary performance instrument, I will have an AOA on my plane (Bearhawk). I wish I could talk one or more of the EFIS manufacturers to do a software AOA. Everything you need to do a really nice AOA is already in the little black boxes. No air data required. The "real" AOA we used to use in the military was useful at an airspeed way above what EAB aircraft fly and land at. At the speeds we fly, it might actually work better, although I have zero experience flying an EAB with air data derived AOA.
AHRS has all the info you need for a really nice, functional AOA. The companies that make it just don't know it. I use it all the time at work, albeit not in a dynamic environment. Once or twice a year I use it in the sim, and the instructors can't figure out how I do it. But it is all there. I just have the experience using the info. it is not talent.
I will try to make Oshkosh this year for the first time since the early 80's. I will try to talk a couple of the companies into offering it.