Over summer for preseason training it will be used by the RFC. We needed a decent non-cricket oval to ourselves train on. Over recent we've been summer nomads - Vic Park, Beach Rd Oval, Gosch's Paddock, etc.
The Government doesn't put millions into MCG and Dome size ovals at Craigieburn for Coburg to play all their homes games at ABD Stadium or for Richmond to set up its own VFL side based at Punt Rd. Craigieburn is also a population growth corridor. We shouldn't shy away from it. As WP says Punt Rd isn't an option either in the short term.