Honestly it seems like if trump's team wanted to address the witnesses and whatnot, they'd do it now, especially considering new evidence likely is unavailable. Would be a good setting for trumps lawyers to put the screws to some of these folks. It just doesn't seem worth the time because acquittal is almost certain and primaries start Monday.

They absolutely do have a system set up where, should they be in favor of it, they could interview any of the witnesses on national television like tomorrow. Haha. They're choosing not to, and not because anyone is obstructing them from it, but because it legitimately doesn not change anything or benefit anyone.