zmk-config VS qmk_firmware

I have a 3x5 corne. I use qwerty with home row mods mirrored on both sides. a = a/ctrl, s = s/alt, d = d/gui, f = f/shift. I have a navigation/extra symbols layer with vim style arrows on the home row of the right side and mods on the left side. A numbers layer with mods on the home row and numbers at the top. A function layer with function keys at the top in the same positions as the numbers. A bluetooth layer for managing bluetooth profiles. I find it works well for me but I don’t think any one layout works for everyone. Here’s my layout: https://github.com/int3rrupt/zmk-config/blob/master/config/corne.keymap

I had trouble with HMR as well at the beginning, but since switching to sunaku's fork/PR I've almost eliminated all the issues I had with it. And worth mentioning is urob's timeless HMR config from which I think the fork/PR takes some of its inspiration.

Affirmative. I updated my fork and my clone last week. I also did a second, fresh clone and merged this PR: https://github.com/manna-harbour/qmk_firmware/pull/56

Im guessing installing something like this is what i need to do? https://github.com/manna-harbour/qmk_firmware/pull/56

See my Miryoki PR for details: https://github.com/manna-harbour/qmk_firmware/pull/56

I have a separate system for that as part of this old unreleased project. They're orthogonal so could be used together, but it'd be nicer if they were integrated. If you just want to remap buttons or map buttons to keys you can do that in the OS.

Well, things like Bilateral Combinations are aware of which hand is using the modifier to only apply it to the other side's presses & minimise accidental triggering on same-hand rolls.