The downside to expansion is SL clubs taking a cut in TV revenue next year as it would be spread further. Will they do that to save Leeds or anyone else? I'm not so sure, even if that is the plan for 2021. Too many teams operate on a knife-edge to expect them all to be willing or able to lose a chunk of income at short notice.
I think p&r is a stupid indulgence for a sport with too few big teams, designed to assuage fans of a couple of mid range championship sides, whilst driving short-termism amongst all SL sides caught in the mix. All in the name of 'excitement' that a whole bunch of sports - including RU - see no need for.
But we can't bet on it being removed to save us - I think if we finish last we'll go down for a year at least. Worryingly right now without my blue and amber specs there's nothing that gives me any confidence to think we won't finish bottom except our current points difference advantage.