As much a i support the Jan 6th investigation. There will be nothing new there that really changes anything. Any evidence they come up with will be considered fake and lies by the GOP and Trumpers. While the Dems will just think that they have confirmation of what they already suspect. The only thing that would come of it that would hurt Trump is if there are charges that will be filled against him from it.
But right now the witnesses they call dont show up making the Commission go through the process of trying to get them charge with contempt, Trump and his pals file law suits to keep papers and records from being released. They are trying to drag it out so that if the GOP does win the house in 2022 they can just shut the commission down.
I mean it has been going on this long and there has not been one bit of real news or revelations to come from it that has hurt Trump or any GOP member.