First of all, Mixtape mode shouldn't just switch modes depending on the time of day, but rather let each player choose the mode they want at any time.
That way you can play your favorite mode regardless of the time of day, and you won't have to waste time waiting for your favorite mode to come around.
Well, I've been saying this ever since the mixtape mode was first implemented, but it never seems to happen :(
They probably don't care that much about the mixtape mode, but it pisses me off when the dev team is too lazy to take care of these little details :(