I doubt this would be possible because OFP checks if player has the missions
before it even accepts the player in the pool.
Generally speaking addons are always a problem in MP. Playing missions with many addons just always makes the session so messy for some reason..
Artak connecting..
Cannot load mission missing addons: ("insert odd addon name here")
Artak disconnected
Artak connecting..
Artak: Guys I'm missing an addon!!
Artak disconnected
Artak connecting..
Dude: Sorry bud I forgot to tell you, you need the addon..
Artak disconnected
Artak connecting..
Artak: What addon is it, where can I get it?!
Artak disconnected
Artak connecting
Artak: ?!?!
Dude: Heck if I remember, wait a sec
Artak disconnected
...
seem familiar?
The best only solution to reduce the confusion is to play only MP missions using either a) official addons b) mods c) addon packs
* Artak leaves mumbling something bad about addons