This is far beyond my coding know how and it would have to be handled by a modder with more capability.
As a simple work around it may be possible for servers who run the Snufkin Xpansion Weapons Mod and Vehicles Mod at the same time to utilise the hat mod system. For example, adding the parachute with a low fall velocity buff or zero impact damage bracing buff could act as a workaround.
It may not be pretty though as the hat will show the parachute while in the vehicle and it is not detaching when removed as other hat mods do. As an example.
Testing with
@bdubyah's Vertibird from the
Wasteland Mod.
View attachment 19938
And as the parachute is already attached to the player's helmet, it simply hangs where it is manually located.
View attachment 19939
I shall ask a more experienced Modder for advice on this one for sure. If it is not possible to hide the parachute while in a vehicle or detach it like with others, maybe another model can be added instead depending on what's available.
I'm sure I saw a post where this was a thing in A16. Before my time with 7D2D and I wonder if the code is still out there or anyone remembers it.