The problem with summer football (and I'm a supporter of summer football) is that if the juniors are to move towards a pyramid structure at some point in the near future then you really need to run to the same season calendar as the SPFL. And that never seems to get off the ideas page with the SFA.
I think all football should be played in the summer. Sitting at East End Park in February is shite when it's a cold day - even worse if you're at an exposed junior ground. You'd almost certainly get more punters but i wouldn't support it until the seniors move that way too.