Maintenance Hours

There is a question I have had for a long time, why can't riot fix bugs and solve other problems at hours when no one wants to play league? Do they really have to stop people from playing league 9 hours straight during the day, or later in the day when a majority of league players like to get on? I think that it would make a lot more since if they started spreading out the hours they shut down league. Why not fix a few bugs one day for a shot period of time and continue more of the work the next? Do they need to have league offline for several hours straight? Also why do they fix problems during the night. Can't they fix bugs during the times where most people are in school? They just had an extremely long update that lasted from 12:00 at midnight till past 6:00 the next day. This is a really long time to wait to play league and I believe that it would make it a better game for everyone if they could start spreading out the hours that they shut it down.