There's a time window for Impeachment. "Tactics" may be germane within it, but that window is short

[StarfishSaver]

6. Building a legal case isn't delusional. It's imperative

Those who think Democrats can and should first exhaust all preliminary moves in order to build the strongest possible legal and political case against Trump before moving on to Impeachment are deluding themselves."

It is absolutely necessary, indeed critical to "exhaust all preliminary moves" not just to build the strongest legal car, but to build any legal case capable of prevailing in the courts.

On of the only reasons Congress was able to score three major victories last week in the courts (the accountants' financial records, Deutsche Bank records, and the wall emergency funding) is that they took their time and exhausted their extra-judicial remedies before taking their cases to court. Had they not done so, they would have been sent packing to go do their homework before wasting any more of the courts' time, regardless how strong their cases may have been on substantive grounds.