Thing is NLL holds other events on Saturdays. They already hold Melee and Brawl events and hold events for other games as well.
IMO, Friday is not a problem, it's our lack of drive as a whole. This is meant as a training ground. FGC holds training sessions on a weekday every single week with good to great attendance (Option Select in Miami, FL on Mondays, 8 on the Break in NJ on Tuesdays, Guard Crush in Brooklyn, NY on Wednesdays, WNF in Southern California on Wednesdays, just to name a few). Even CFL's Melee community has it's session on Monday. Zoro took Keith's idea and Monday Night Melee at NLL has been a great success because the community makes it so. Keith is at NLL every Friday yet barely gets good attendance for whatever reason.