Personally, the quicker this is over the better. I'm tired of hearing about it. I think the backroom idea for additional witnesses is that it would take additional time. The senate...the Republican senate...isn't getting anything done. That's a win for Democrats. The longer it takes the less the opposition achieves.
I'm not sure what to call these proceedings. Trying to equate all of this to a "trial" to make points are crazy. A true American trial does not have biased jurors...little alone asking questions during the trial. Let's get this over...vote up/down.
I have been saying that here for ages.
Criminal prosecutions are not an apt analogy to use for the inherently political beast that impeachment undeniably is and always has been.