Looking at film shots of TIE interceptors and reading the published background in a few books it occured to me that we're flying the int with 4 lasers on the wings tips...
But some of them have six cannons, as the original tie 'chin' cannons are used as well (you can see this in ROTJ)
Perhaps a cool upgrade to interceptors would be to give them a chin gun 'upgrade' that increased firepower to 4 dice.. but perhaps with a risk of taking a critical from burning out the capacitors/generators?
Certainly make the falcon problem less of an issue if you had the opportunity to wang five red dice at it at range 1 or 4 at longer ranges.. albeit with a risk to yourself.
