Im not sure if what im about to suggest is possible, but its just an idea that swiftly popped to mind....
Is it possible to create a never ending mission for OFP that is completly roleplaying orientated? For example... you start off as a civilian with absolutly nothing. You complete jobs for credits and with those credits you can buy guns and ammunition. Your character starts off very slow... very unaccurate with a weapon?
You start off in one particular part of the map and the only hostiles within a 3 miles radius of that area are very poor quality soldiers, if you kill 5x crap soldiers, your accuracy increases by 0.1 kill 10 crappy soldiers to get 0.2 kill 20 for 0.3 40 for 0.4 etc etc etc...
the further you go away from home the harder the troops get, so you gotta make sure your good enough before venturing out further.. you get credits for killing baddys but the ammount of credits depends entirely upon how hard the enemy was.
Baddys should constantly respawn so that you can play forever
There should be different locations where you can buy different things like guns.. or maybe even vehicals....
Pricing
Beretta 9mm is the starting weapon
9mm Ammo = 30 creds per clip
The better the weapon, the more it costs
etc
etc
etc
Is this type of idea in anyway a possibility to create? if so I think it would be very very good fun