It seems strange if fans are not allowed in for non elite football levels before May 17 why has the Government not simply said that, game over simples!! Unless they have some cruel agenda I think there will be some allowance.Step 7 and lower will, I think, depend on their particular circumstances but, for steps 3-6, there's obviously no justification now to continue playing league matches. But I'd agree with earlier comments there is an opportunity to play league cups and county cups, possibly in a revamped format, which imho would be preferable to a new one-off competition.
However we still don't know if fans will be allowed to attend 'non-elite' matches before May 17. That alone could scupper any plans the step 3-6 leagues are currently working on.