So I've spent a couple of days modding Carrier Deck to allow some QoL keybindings, which also "unlocked" other "features". I did this for myself and not sure if anyone else is interested in these modifications. If you do, let me know in the comments and I'll see how I can share this mod.

v0.1

Keybindings (all configurable):
- Tab (default): switches between upper and lower deck.
- When a plane is selected, you can directly assign a load ordnance mission (e.g. Air, Submarine ordnance) by a specific key.

"Features" (all off by default to respect the original design):
- Allow loading in lower deck (I wouldn't recommend turning this on as it is pretty buggy).
- Allow loading while moving.
- Allow loading in elevator parking bay.

v0.2

- Load queue: now you can queue orders before the units are actually in a position to execute them.

Everything is configurable through config files.