Well, we would just like a fair trial in the Senate - even if Trump* is acquitted.
A fair trial is impossible. Even if McConnell let Pelosi have all the witnesses she wants, and even if McConnell never spoke to trump's legal team ever again, it still wouldnt be a fair trial. The reason for this is because democrats have already made up their minds. They are chomping at the bit to vote to remove trump.
A fair trial would only be possible if both sides were completely impartial, which neither side is impartial.