Would it make sense to have set squads so one group isn't being left out in the cold by not enough people showing up that day?  

I know we talked about inviting pugs to fill spots and we've done it before without a problem but it would be easier to know what we're looking for beforehand and keep us from starting 10-30 minutes late as we search for people who don't get to kara, disconnect or aren't already saved and can't remember that until they try to walk in the entrance.  Having sign-ups for each of the raids might help get class needs sorted out prior to 5 minutes before the raid starts and having to call it because we need tanks, heals or dps.

Having a schedule would also help me and others to know IF they were going to get a raid spot to better juggle real life schedules, and that showing up wouldn't be a waste or just hoping something opened up because someone left.