EDIT: The tl;dr of this topic after all is said and done is that if you hold Left-Alt and left-click on a Secret combo box in the F5 secrets pane of a screen, it'll set the Secret Combo you click on to your current combo (And Cset). You can also deploy it in a spray method, just holding Left Alt and the left mouse button and flailing the mouse all over your secret combos without releasing the mouse button.
And now, back to you, past-ShadowTiger!
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I'm remembering all of those hours I've spent scrolling through seventy pages of combos then changing the Cset three times to find part of a door that I wanted to create via a screen's secret. You have to do it for every secret combo. Sometimes you use almost all of the screen's secret flags too. Sooo much time is spent navigating those combo pages and switching Csets away from Cset 0 to Cset 2 or 3.
Considering that it's more likely that the Secret Combos will all be in the same area in the combo page and all the same Cset, it would make sense to have a button somewhere in the Secret Combo area (F5 in ZQuest) that would just go through every single secret combo (Yes, "Burn" through "Sword," and all of the "Misc" ones as well. and set all of them to the same Combo and Cset.
It would save so much time.