It is up to modlet creators to provide compatibility patches for overhaul mods. NOT us.
Ideally yes, that would be the case.
A modlet, as I understand it, is not supposed to be a complete mod. For example, with weapons, one modlet would simply create the weapons recipes - that's it.
A second modlet would add those recipes to the vanilla game's progressions files.
That way, there would be a third modlet that would add the recipes to the progressions files
used by this overhaul. There would be other modlets that did the same for other overhauls.
Having said that - supporting all the individual modlets would be a nightmare for the modlet author if it was only their responsibility. So it would be
nice if overhaul authors like you could provide help in this area.
Or: perhaps break up the overhaul into its own collection of modlets that can be used separately. I thought that was the general idea nowadays anyway - an overhaul would basically be a collection of individual modlets that all worked together to provide a unified experience.
An analogy would be Linux. A modlet would be like a low-level library or program (say, Nautilus file manager) and an overhaul would be like a full-fledged Linux distro (say, Ubuntu).
That's what I thought was the intent, anyway.
Obviously I can't force anyone to do anything, so if that's not how the modding community ends up doing things, so be it.