The PL should be told to explain how the process of elevating a club from promotion from the Championship (Or lower leagues in reality, for completeness) to competing at the highest levels works, as they are viewed (perhaps incorrectly) as some overseer across the entire league structure (Via solidarity payments to all league levels) and should be asked to clarify how this competitions integrity is preserved under their funding.
Of particular interest is how a new PL entrant could hope to aspire to further success (or as should be obvious in reality is if the ultimate destination for any club in the PL's eyes, is arrival at the PL and no further)