The majority seem to like the split. It adds different excitement.
We've got a weird playoff system as well. Do we scrap that because the Dutch and Italians don't do it?
There is at least one other top League in Europe that does it and their option is muccccch more convoluted than ours. They don't scrap it because other leagues don't copy it.
The issue here is "we want more teams in the League" but we also want better teams, more signings and a more competitive league. All those things aren't compatible.
You reduce back to 10 to remove the split and still you'll be playing teams more than twice. You increase the teams in the league to lose the split, there's then more poorer sides in the league with less money across the board so twofold the quality decreases as well.