Wow.
I mean wooooooow. So you're metaphorically "married to D&D"? I mean, that's wild. It's like a sea-captain being "married to the sea" or "married to their ship" or something I guess. That is probably the most extreme "I'm into D&D" claim I've ever read in 30+ years so er... respect for that I guess.
Obviously if you're so utterly, deeply, completely committed to a game that you would directly equate it to an inviolable holy union, that you're literally sworn oaths to uphold, then you're not really likely to be interested in any other games, under any circumstances. But that doesn't seem like it's a common or really reasonable position.
Maybe you would have been better off with like a car analogy or something? Just suggesting.
I'd agree.
I'm not sure why people think D&D isn't relatively compatible with heists etc. - as I've pointed out a few times, the BitD flashback/planning stuff was actually in D&D adventure in Dungeon in 2010, loooooooong before BitD existed.
But some other mechanics don't port as well, and what particularly tends to be an issue is if you start trying to port mechanics from multiple different systems. Like with your example, I'd actually say you'd gone too far, like you're taking bits of BitD which aren't really necessary and aren't going to help the vibe, just for the sake of mirroring BitD, which is going to make it harder if you also want to use that D&D campaign to do non-BitD stuff.