A Republican should sit in the White House, following Trump. Changing parties is not acceptable, because the country voted for a GOP Presidency. They didn't vote for President Pelosi. So if we move down the line of succession, it should be a Republican.
I'd support another Republican just to avoid the insane level of fighting that would come with a Democrat taking over. However, I would note that I have been against the electoral college for years, and Trump is the 2nd Republican in a row to become president against a plurality of the people, and considering the margin Clinton won the PV by, it is a completely valid argument for Democrats to say the country voted for their leadership.
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As for the topic - we need to take time and care to collect evidence and build a strong case before pushing forward with something like that. Reading various liberal sites like DailyKos comments, I think that is lost on some of them.