The reason i want this is because Axiom uses left alt by default to open the builder menu. Yes, I can change Axiom's keybind, but it would be nice to have the option to change it in Pick Block Pro.

Thanks!

Thank you for your suggestion.
Atm my main priority is getting PBP ready for the 1.20.5 release next week
Once I'm done with that I'll look into adding keybinds for the modifiers

Sorry for the late reply, however I've looked into implementing your suggestion and came to the conclusion that it's not sometihng I can easily implement atm. To do it properly I either have to switch to a completely new config library or I have to create some convoluted system to change the keybinds.
I was already considering switching config library (not only for your suggestion), however that's not something I'll be doing anytime soon. I'll leave your suggestion open, so when I do switch library in the future I can take another look at your suggestion.