The classic/traditional RTS genre died for me when it abandoned the focus in involving huge maps where nor you nor the enemy knew where you were for two hours, focused in exploration for resources and defense vs risk.
I abandoned them when the story mode had'nt nothing to do to develop a base and combat but pseudo adventure mode and timed events. At the same time the real rts mode turned in a rush e-sport based in 5 minutes games even for the single game portion. Balancing and more shit,
When all of this occurred i was more interested in different games like total war or similar clones with a higher number of units involved. At least those had the strategy concept more visible, and not a MOBA/action rush game that Warcraft 3 and Starcraft 2 helped to create as the standard.
Not only that, funny enough, the concept itself even in the classic RTS done right was more and more boring to me years later clone after clone.
But who knows, maybe I was more interested in concepts that never were the strong points of the genre or the idea developers had about them.
Anyway I recomend Kohan for fans of the genre. It was relatively traditional RTS game but it had refreshing concepts that made it fun and different.