Yeah, I was thinking about both of those issues too. Here are my thoughts on them:
I think it would mess with the down-firing sub to put casters on the bottom, so I may mount some on the side. Or, I have a nice folding hand cart I may use (perhaps even semi-permanently attached); just have to see. Third possibility: recessed tilt-back casters on the back corners. I will investigate.
I'm with ya man, I was bummed about that too. But I plan on using an extremely short cable run (prob. 3 feet) so the noise and signal loss will be minimal. As I'm sure you know, the balanced/unbalanced thing makes more of a difference the farther the run is. (And of course there's the +4/-10 dB line level loss... shoot!) Ground loops will not be an issue, as the source and amp will both be running through the same Monster power conditioner. But yes, I would have definitely preferred balanced ins. Speaking of which, I am also mad at Bose for the same reason- on their L1's, all the 1/4 ins are unbalanced. Therefore, I use the XLR ins, which sucks because they are mic preamps, so you have to deal with leveling discrepancies. Oh well...