Yeah, what really kills it for me even more than the limited selection of two is the HUGE four hour windows. 10pm to 2am eastern US is one of the time windows. When I get on at night, it's typically 100% confined to that window, so I'm stuck with the same two maps the entire time (per mode) even if I play for 3+ hours. That's awful.
I'd like to see both, 3 map rotation, 2 hour cycles. But we'll get one. Or none. I've resigned myself to this.
If they're worried about loadouts, add the ability to set, say, three custom loadouts to switch between during breaks (or even during matches, CoD style).