You're way wide of the mark here. City have made it quite clear that they have never accepted FFP. They have actually said that the club intends to operate as a profitable club BUT only after a period of heavy investment. What is impossible is to fight "inequality in football for the greater good" so that you can win some "moral argument" because laws are made to apply to specific cases and a court would not entertain some airy fairy challenge to FFP. Litigation is, anyway, long, always costly and the outcome uncertain. In 2014 the club took a commercial decision that "taking the pinch" WHILE NOT ACCEPTING THAT IT HAD DONE ANYTHING WRONG avoided a long and costly distraction from the commercial development of the club, which was proving brilliantly successful. Now, our case is that we still do not accept the validity of FFP (and, I suspect, are quite prepared to test this before the ECJ if necessary) but that we have not infringed these regulations anyway and have only been found to have done by the IC which has accepted evidence obtained illegally and which is inadmissible because of this and its inherent unreliability, and because the procedure followed in the two UEFA chambers is not impartial objective or consistent to the point where it is reliable.
This seems a strong case, if this is indeed the club's case (I certainly don't think our legal team need any help from us) and don't worry it seems to be near the summit of the moral high ground. And TV splits are totally irrelevant to this case. Our rivals in the elite tell us we can only use sources of revenue they have been able to develop but you are not allowed to use your advantage - very moral.