Overall we will probably have to keep things as they are.
If we regularly played on Friday nights or Monday nights, we would get less away fans over the season, and possibly some home fans could not make Fridays. Traffic is always notoriously bad in the area around Friday tea times as well.
If we played Sunday home games, we would clash all the time with matches on Sky, plus have less recovery time for midweek games.
The only thing that might change is the midweek night which has always traditionally been on a Tuesday at Christie, but then again what is the point of moving that to say, a Wednesday?