This is not about a potential Trump impeachment, more of a general debate. If the House votes to impeach the prez, should his powers be transferred to the VP (as acting prez) under the 25th amendment while the process is ongoing? Until the senate moves forward and either votes to impeach, thus making the VP a full prez, or acquittal? In the latter case, the officeholder regains powers and duties of the presidency.
I think this is a fine idea, preventing a prez from executive action influencing the impeachment process. The VP in acting capacity ensures a smooth ongoing of govt affairs.
Opinions and objections?
I think you'd need a couple of things to round it out. First, a time limit between the House voting on impeachment and the Senate acting on it. Second, I think making the Vice President the Acting President in this case is problematic, as the VP is likely somebody politically and personally tied to the president. I'd prefer if some kind of caretaker body were appointed for the duration of the impeachment process, perhaps from among governors or something like that.