It's not just the DoR and players - it's the entire back room staff that would need to be put in place to support a professional rugby team, Doctors, medics, coaching staff, analysts, groundsmen, ticket office staff, match day security etc etc. And with no DOR in place they have noone to drive any of that.
Signing 30 random players with no plan is a recipe for disaster- they need a DoR in place with a vision and a strategy, and they have very little time to do it. I'd almost argue that getting a DoR in to drive all of that is almost more important than the ground situation, especially is solihull is a legitimate backup with rfu approval. If recruitment doesn't begin till after the May meeting, I'd argue it's actually too late at that point.
No wonder there were rumours the owners asked the rfu for a year's reprieve. If I was a betting man I wouldn't be putting any money on wasps being in the championship next year - it's nothing more than a pipe dream at the moment.