One thing I wonder though, is a bolt-together frame better than a one-piece welded frame? 

Cool data sheets. Thanks Chip. One of my first thoughts about the bolt together frame was the "what if?". After all, anything can come loose. But with chemical bonds and good maintenance it's not something that would immediately scare me.
I like what it suggests for flexibility in that new hole. Different section might bolt in with mounting tabs for who knows what later on. But can do so without a total redesign.
Also was interested to read that there is no longer a drivetrain alignment. They think they've got it completely nailed down now... Will be interesting to see if that plays out as effectively as they obviously expect it to.
Had to chuckle reading the little blurb on the dipstick too. Two different full marks for bikes that lean the trikes that don't.