MustaphaTR's D2K mod is a small mod based on original D2K mod of OpenRA. It includes 8 sides (Atreides, Fremen, Ixians, Harkonnen, Corrino, Ordos, Mercenaries, Smugglers) as playable and has special units and abilities for each.
Only problem for now is Shadow, i even made them fall to ground which isn't added on OpenRA's RA2 mod yet.