You have serios pathing issues because of that space hole at the nat choke. Only the smallest units (marines, zerglings, medics, zealots) can pass there.
Even vultures get stucked.

check gmcs.

mainbases are too small imo.

might aswell open up the choke tbh. Imo also remove some solar arrays here and there so there will be more build space for proxy stuff

I think he wants it so that only smaller units can get through. Because the bases are so close this means it's easier to defend against a rush without having to be afraid of larger units coming through.

Although I love the layout, I've learned people tend to like bigger, more open areas in the middle where units can flank easily. That being said you probably might want to open up the middle a little.

Other than that I think it looks really good.

It's not a bad idea, but once you get over marines/zeals/lings and it's a big pathing adventure :)
which is not the main goal of the game I belive.