When a project got cancelled it used to be dead, never to see the light of day ever again. And that was the fate that once befell Star Wars: Battlefront 3. But a group of fans have been steadily working on wedging as many assets from the cancelled shooter into a Battlefront 2 mod, and it's looking pretty fun.
You'll have to make peace with the fact that Star Wars Battlefront III Legacy is a Battlefront 2 mod, and not powered by something as wallpaper-level gorgeous as the Frostbite engine. But if you can get past the retro graphics, you've got a total conversion that features full space to ground combat on Coruscant and Cato Neimoidia.
There's support for supremacy, CTF, 1 flag and team deathmatch right now. 10 heroes/villains are playable, including Anakin Skywalker, General Grievous, Count Dooku and Master Ferroda. The devs are hoping to have more than 30 playable by the time the mod is fully released, although at the moment the below is what you can expect from the latest beta build.
Speaking of the Frostbite engine, the mod is taking some cues from DICE's Battlefront. Down the road the makers are planning to patch in Turning Point, a single and multiplayer mode based around pushing the enemy back as far as possible (or holding out for as long as possible). Battlefront III Legacy will also have a singleplayer campaign when it's done, much like the original Battlefront games did.
I haven't gone to a LAN in quite a while - I do miss LANs - but if I was looking for something fresh to mess around with, Battlefront 2 and a few mods would be a great choice. (Either that or some multiplayer Descent.)