I understand.
Like i said i think it will be hard to do "instant" swapping from regular to time lapse on the remote button or for that matter any other button on the camera ( some of which have 2 functions to them, short press / long press )
But never underestimate a good modder, just i dont think it is something they have dabbled much with VS image quality improvements they mainly work in.
The guy that helped me whipping up a special firmware for a experimental dashcam was falsificator on here, BCHobbyist ( Canadian guy ) i also think play around in firmwares.
Often i tend to think things are more simple then they actually are, for instance image sensors in dashcams, well image sensors speak a few standard languages, and so i thought, well then you could put in any sensor, but that is apparently not the case.
I would just record regular, and then in post production speed up the parts you need to speed up, by changing back and forth on the camera, well you risk forgetting what mode you are in right now, or just all together forget it.
At least from watching storm ( tornado ) chasers it often seem they forget to turn on a camera / use a camera ASO
I like to chase weather too, but in Denmark that generally mean thunder, severe snow are pretty much a no go here, with like 1 foot of snow in the last decade where i live, tornadoes we dont have ( yet ) but a dust devil have been seen that have thrown around some garden furniture and trampolines, and at worst ruined a roof or two.
Storms as in plenty of wind, well we do get those now and then, and we have tried driving around in a forest with trees dropping around us, really not smart, even if with two 4x4 cars hooked up inline pulling a big tree a few 100 M down the road from where it fell, are pretty fun ( imaging what the clean up people will think about a randon tree lying in a place where it did not fall )
Well fun at least if you are stoned, and we was potheads back then.