I was starting to make a list of suggestions and problems in AT5...but they were mostly really trivial stuff like "I want a VU meter here" or "this needs a level control there". But after spending time just playing through AT5, I realized the most important thing: this software just sounds frigging awesome. I mean probably better than any amp or sim I've ever used, and I've been playing for 45 years now - through tube amps, solid state, stand-alone sim racks, lots of the current sim packages. Playing with PRS, D'Angelico, Strat, Gibson. AT5 is just the best sounding way I've ever heard to get a signal from my guitar to a speaker.
Major props to the folks who made this happen. You have one extremely satisfied customer here.