I've had this sort of conversation with Mod Squad types around here (the same guys, I suspect, that wore pocket protectors, had severe cases of acne and ran the public-address equipment at high school assemblies), and they tend toward controlled rage when I suggest that—in the end—all we're trying to do is heat up a little PG & flavoring. Admittedly, it's cool to see a digital readout of your current voltage output, or an LCD graphic of your remaining battery life, or a Google Maps display of the nearest e-liquid vendor's location; I gotta believe the novelty of that stuff wears off pretty quickly, however—and that for all the noise they generate, the percentage of actual buyers in the crowd of gee-whizzers is relatively small.
Having said that, here's what I wouldn't mind seeing: a PV that measures the resistance of whatever atty is installed, then manipulates the variables to deliver the specific wattage you've keyboarded in as your sweet spot.
Also, generating a GPS signal would be nice, so you could find a lost PV using your smart phone.