I also don't think RTS is dead but the category has been stale for some time. I grew up playing Age of Empires 2, and the game still has a healthy player base with regular new content being added. However compared to the turn of the century the pace of innovation has definitely slowed down.
> 4X (abbreviation of Explore, Expand, Exploit, Exterminate) is a subgenre of strategy-based computer and board games, and include both turn-based and real-time strategy titles.
It's nothing like "pure" RTS like starcraft where everything is actually real time. Their 4X games have: speed control, pause, turns (days and months, depending on a game and action). If you remove ability make turns simulatinusly and make a single turn into a day - not much will change in gameplay other than it will take longer.
I am not interested in 4X games.