Pinto provided Der Spiegel with a fraction of the data he (and likely others) had hacked. Since the CAS ruling, new documents have regularly emerged in the public domain, and Der Spiegel has published several articles containing new emails and documents. It has been confirmed that Pinto handed over 10 million additional documents to European authorities in February.
Given that Football Leaks has so far failed to secure whistleblower status for Pinto, a conviction against City is crucial for him to potentially avoid prison in Portugal. This suggests that Pinto and City's adversaries have likely scrutinized every possible detail to find anything that the Premier League could present against City before the commission. I am more concerned about what may have emerged from that direction than what Bird & Bird may have uncovered.
I understand what you are saying, I just don't see it.
Firstly, I find it unlikely Pinto only gave a fraction of the City documents to der Spiegel. Surely he would have given all of them? I am not even sure the documents were reconstructed when given to DS, in which case he wouldn't know what was in them. And even if they were reconstructed, he certainly wouldn't have been able to find out which were incriminating and which weren't. That presumably takes investigative skills that I doubt he possesses.
Secondly, afaik, new documents haven't regularly emerged since 2018. There was a second tranche of articles in DS in 2022 with some additional disclosures around Mancini, Toure and a youth player or two along with various attachments "supporting" the DS claims. As far as I know, that is it and anything that Magic Harris Twat and the rest show exclusively now comes from those two article tranches.
Thirdly, I just don't see how someone who was arrested and tried can still be in possession of the information that was hacked. The City information would have been handed over to the authorities when he was arrested and trued. Don't forget, he has a suspended sentence in Portugal, if he had held undisclosed data back and started distributing again, he would imho be sent straight to jail.
Fourthly, afaik, it hasn't been confirmed that Pinto has given additional data to French and other authorities. It has been reported that he had been cooperating with French authorities. It was Pinto and his lawyer who created the narrative of handing over new "hard disks" in my view for PR purposes and, as you say, to create the impression that he is some sort of whistleblower. It's much more likely, to me at least, that he was cooperating with the French on decrypting information that was already in the possession of the authorities, or helping with its reconstruction. As far as I can see the authorities never acknowledged new data, just his cooperation.
And lastly, the information from the hack was just a dump from the club's email servers. It includes nothing that isn't available to the PL as part of their investigation. Not only that, the evidence the PL relied on had to be disclosed in advance so that the club could prepare its defence. There is no possibility of last minute undisclosed evidence of which the club is unaware. If evidence does come to light later, then the club has to be informed and afforded the time, again, to prepare its defence. Further, as any such new evidence (if there had been any, which I doubt) comes from the club's servers the club will have access to the whole email chain to use as counter-evidence in explaining whatever emails or attachments the PL may want to provide as their evidence.
So, on the whole, I just don't see it. I may be completely wrong and you may be completely right, but not for me.