Before flaming starts...how about: An island half the size of malden but...HIGHLY decorated with lots of high rez vegetation and thick jungle, instead of city buildings some huts and stuff like that.
No vehicals. instead of having 30 ppl on a server all waiting for their turn to ride the hind or the abrams we would get interesting tactical jungle warfare, ppl would stick together, use team tactics and all that stuff.
I know that for many ppl OPF is just good because of vehicals and without those they would be playing MOH:AA instead, but for realistic combat fanatics it would be awsome .
We could have binos, NVG, binoculars, rifles, nades, smoke, flares and all that goodness that comes with OPF, some cool SF soldier models with jungle cammo, dense jungle and huge enough battlefield (considering there would be no vehicals ), but a much more detailed better looking, smaller area to do some interesting combat with.
Imagine a CTF or C&H in a high detail jungle with coll looking models and more tactical, team oriented game against the usual 20+ soldiers armed with sniper rifles and rpgs that want to show how good they are with a plane, helicopter or tank That would be a much more interesting MP experience to me and it would work great on an opf type engine with OPFs realistic infantry gameplay, just take a look on many of the MP maps out there (bis stock included) and you will see a bunch of vehicals thrown at the map with a flag in the middle, not what i like to see in a "realistic" type game.
My discribed type of MP gameplay is something i would like to see in OPF2, vehical abuse made OPF mp not so interesting and even a little anoying .