>>2086746OpenR-ACK!, doesn't even have campaigns fully implemented and the entire development process is focused solely on balance patches for Red Alert part because of the competitive community which consists of 2.5 inbreeds and 3 schmuck streamer types. Tiberian Sun part has been in development hell for over a decade now and the only people pushing OpenRA as a game engine and modding platform are mod developers, unless said mods get coopted and killed by beforementioned schmuck streamer types (say hello to Crystalized Doom and Shattered Paradise, and say thank you Ganon for being proof that soviets should have killed and raped every g*rm when they still had a chance).
There's bajillion custom hacks or whatever of both Dune II and Dune 2000 on the web, old Dune games community is well organized and separated from the community of the other games made by Westwood, i am sure you can just download community patched Dune 2000 from the same forum that was posted above