Here are some operators intended for the 2.80 release in a proper patch, but was finished too late for the feature freeze. Some elements are from @Richard Antalik (ISS) D4290 ex. the selectunderplayhead(but removed handle selection, as it was not needed for this current purpose).
To complete the current reworked menu selection tools, vertical(Playhead) and horisontal(Channel) strip selection options where missing.
SelectStripsUnderPlayhead, SelectStripsInChannel are the included operators to meant to solve this. Click to watch the gif play:
And since the odd Cut Hard(now called: "Hold Cut") function only seems to be useful for making hold/freeze frames, I coded an operator for this freeze frames purpose, so the Cut Hard could be removed from the UI(I haven't removed it in this patch).
CutHardAndHold is the name of this included operator. Click to watch the gif play: