I think that load time is big question for current BD players and connected to the reason I'm not buying a player just yet. I'd hate to buy a Profile 1.0 player now only to face potential compatibility issues will future Blu-ray titles. Either long load times or not loading at all have already been documented with a couple BD-J titles. Of course, HD DVD players haven't been 100% problem-free, but it would suck to be "one of those people" stuck with an Profile 1.0 device when BD-J starts getting more plentiful and complex on Blu-rays.
2008:
"It looks and sounds awesome, but the disc took 4 minutes to load and the menu system had massive lag with my 64K of persistent storage player."
