On your first point, I find it incredible that that is apparently legal. Sure, for the good if the sport, only put what the PL considers as fmv income in the FFP P/L. But no, they gave given themselves the authority to tell a third party, not governed by PL contract and very likely in a different country, to enter into a new contract for a lower amount. They have even given themselves the power to increase the amount the third party pays if they consider it undervalued. I still can't understand how that is legal.
On your other two points, I have been saying that since early last year. It's one of the many reasons I think the PL doesn't have a chance of finding the club guilty of the most serious charges. What panel is going to make a "guilty" finding then to have a criminal investigation not even started, refused on the grounds of insufficient evidence or to have one concluded without a guilty verdict. Yes, the lawyers can talk about different jurisdictions with different standards of proof, but it would be hugely destructive to the reputation of the PL and its disciplinary procedures. I am pretty sure the panel will bear that in mind when coming to their conclusions even applying a higher standard of proof than usual. Super-cogency, if you will.