Regarding #4 above, it appears that it's just the Roku app that absolutely sucks with regard to scheduling. The online interface is much better (but still not up to TiVo standards). That said, I don't want to pull out my laptop or iPad every time I want to schedule a recording, so they definitely need to spend some time beefing that up.

New annoyance:

Apparently you can only adjust the scheduling to record over by up to 4 minutes and it is done universally. There doesn't seem to be any way to adjust a subscription to a particular show to record 30 minutes over, like I want to do with NFL games.