Playing an ineligible player for 90 mins in a vital league match is a fairly MAJOR admin error however you look at it. I'd be astounded if they went against the precedents for similar admin errors - coz no team would do it on purpose - that have been set in recent years.
Hearing should be before the weekend so that teams know where they stand. Precedent is to deduct points gained, so would expect them to lose all 3. I'm sure Wigan and Millwall would have something to say about it if they didn't.
Big scores don't matter. Wigan cannot catch us if they win they remaining games 10-0.
It is definitely better if Rotherham lose tonight. However, you're right, it's not a disaster.