1D: I like the wordplay (and the use of "Keys" with Alt Delete T), but as far as I know, Alt + Delete + T isn't really a thing (in the sense that CTRL + ALT + DEL would be). I think there's a better surface possible here. 2D: [Tumult] for DO, as in like an affair or a party? That's a toughie for me, but I will say that I actually like the idea of a sentence that's just synonyms.
3D: Very nice. [Flight] had me completely fooled. 4A: Another nice bit of wordplay, pairing [Second place] with [silver]. 5A: I like this. A test solver once told me that they thought [Republican leaves] would be indicating to remove every R from the fodder; I think it's pretty clear from the surface that only one exits, and there's no ambiguity here about which one. 6A: One half of the great Rackenfracker duo once explained to me the importance of a precise indicator. If [heart] doesn't mean "the central letter(s)" but instead means any central part of a clue, then [inscrutable heart] could be read as U, RUT, CRUTA, SCRUTAB, or NSCRUTABL. Now granted this is a six-letter clue, so that narrows down the options, but I'd still try to be more precise.
Thanks for the feedback again! I spent a bit of time trying a to get something with “in a rut” to work for 6A, but thought it was a bit sloppy with the “a” disrupting the wordplay. But I agree that it’s a bit imprecise. And yeah, I think “tumult” could have been another word. Thanks for solving!
2D: [Tumult] for DO, as in like an affair or a party? That's a toughie for me, but I will say that I actually like the idea of a sentence that's just synonyms. 3D: Very nice. [Flight] had me completely fooled.
4A: Another nice bit of wordplay, pairing [Second place] with [silver].
5A: I like this. A test solver once told me that they thought [Republican leaves] would be indicating to remove every R from the fodder; I think it's pretty clear from the surface that only one exits, and there's no ambiguity here about which one.
6A: One half of the great Rackenfracker duo once explained to me the importance of a precise indicator. If [heart] doesn't mean "the central letter(s)" but instead means any central part of a clue, then [inscrutable heart] could be read as U, RUT, CRUTA, SCRUTAB, or NSCRUTABL. Now granted this is a six-letter clue, so that narrows down the options, but I'd still try to be more precise.