A large chunk of the OFP developers jumped ship to make ARMA. Since the early days the game has had a large modding community. Take:
armaholic.com
..for example. Many of the OFP projects got ported into ARMA. Currently people are working them into ARMA 2. They left the core model of ARMA intact
giving us things like more vehicles, more AI commands, and medic/evac abilities. ARMA 2 hasn't been out that long but I am running a core of 10 or so user made missions on my dedicated box.
The great thing about the community is that we Americans are actually not the largest demographic. As such there are all sort of things out there like Turkish skins for infantry, rare splinter-state variants, etc. All you have to do is download them and script them into your missions.
I run two main scenarios depending on who is on and the amount of time that can be invested. Civil war is a low intensity conflict between the Chernorussians Insurgents. It starts off slow with infantry, BRDMS, and Gaz gun jeeps. There is an RTS engine on the backend that lets you buy equipment as mission and action rewards. When your commander has enough resources to deploy a heavy vehicle supply at your base, you can roll out T-72s. It tends to take an hour of game time or two to escalate to that point. You can build defenses in remote villages when you capture bunkers but you have to go back to base to buy more hardware.
The Superpowers scenario is the same concept except with the russians versus the Chernorussians back by USMC and it generally escalates a lot faster. You spend a lot more time hugging the ground on that one hoping the Abrams with TUSK does not notice you.
The AI makes still makes some mistakes
but all AI does. Now it uses suppression and bounding overwatch to try and triangulate you. It really keeps you on your toes. They don't cheat either. They have to see/hear you
otherwise they try to get to your last known position then they sweep out to find you. Engagement ranges are realistic so often I am firing at muzzle flashes when the combat breaks out.
Yeah
not sure who you talked to. There is some hate between the ARMA and OFP guys from time to time. Its silly though. Each incarnation of the engine is just an improvement of the last. If you can play OFP then the learning curve will be minor.
The lighthearted mods are already being ported/updated. Farms Wars is a riot and I expect we will have the big Zombie Infection mission going within a month or two. Someone was working on Star Wars there for a bit but the amount of skins required was mind boggling.
Can you tell I dig this stuff? Where else can you command an MI-18 5 miles away to take off, fly to your position, and unload infantry, then return to base and pick up your friend who just bit it and respawned? All while trying to pick infantry out of Russian back yards with your small team of BRDM mounted goons? I find myself just enjoying the country side at times. Civilian vehicles are your friend too. I am not to proud to jack a Work Ural or a Vaz to get to the front line if that's all I have access to :)