One of the issues which has been mentioned, is that you can't physically watch RLC 24 hours a day. I see a number of posts asking for photos/videos of previous happenings.
Another voyeur site (not really up to RLC standards) has a replay cam. This records the highlights of the past 24 hours, and allows members (and guests) to see what they missed. If the premium sites were included in the replay, it would give other members a taste, and possibly attract more members to the live action.
I assume that RLC records the rooms for its own purposes, so it shouldn't be a big issue to set something like this up.