First, the Twitter files show that the Trump administration
did make requests to Twitter. Of course old Twitter didn’t let us know, so your hypothetical is already disproven by the world we do live in. We still don’t know what those requests were because (tellingly) Musk won’t disclose those.
Also remember that for as much as conservatives say that Twitter is a bastion of left wing thought, Trump was permitted on the platform even though he repeatedly violated the TOS. He was treated better than most any Twitter user up until he used the platform to stage an attempted coup against the US government. So not only was Twitter protecting him, the bar for taking action against him was astronomically high.
Moreover, Trump didn’t have to use Twitter to suppress the Russia investigation; he obstructed justice and then his hand-picked attorney general used the DOJ to run interference on the Mueller report, which mainstream media credulously accepted. That’s far worse than anything alleged in the so-called Twitter files, but you didn’t see Republicans mad at the DOJ for that.
This is why their current indignation over the Twitter Files rings so hollow. If the FBI is really acting politically through Twitter, part of the cause must be the politicization of the DOJ under Trump administration, which was gleefully used as a political tool for 4 years. You’ll never see that level of self-reflection though.
So my answer to the original question of “do these files contain valuable information?” is: maybe, but if you expect the people who are maddest about the Twitter Files to actually fix anything they allege, that would be like thinking Elon Musk is the guy to bring free speech to Twitter; the people who are the maddest are hypocrites only mad that this tactic is being used against them. They will happily use this tactic against others once they have power (all the while suggesting they will fix the issue). And we know this because they did exactly that from 2016 to 2020.