I like the idea of a slightly larger second tier too. However it's been floated before and shot down most notably at covid. There's so many full time teams now I can't understand how they'd not back themselves more in a 12 than a 10 team league. There's enough in part time teams for a two or three seasons to compete but once your prime players get a bit too old everyone struggles to replace them. Our kit-man used to say every year in the championship for a part time side is a game of Russian roulette and eventually you'll get the bullet. Would also personally quite fancy the variety of a big part time league with the variety of a combined League 1+2. There's only so many times a year going to (insert hated ground, normally Airdrie) is interesting.