What would you like to see in an RTS?

I'm interested to hear people's thoughts on what single major concept/mechanic they would like to see (more of ) in an RTS.

If you could chose a single thing that is missing or lacking in most strategy games, what would that be? (The inverse is true too, what would you remove)

So, it can be a specific mechanic, or a style, or a design approach... Anything that make a massive change for you?

So, in my case, I really would like to see more exploration-based RTS games, where discovering new areas/levels genuinely feels exciting and matters in a mechanical sense. So, the strategy still matters, but has to evolve with the environment/terrain differences.

Another example for me is stylisation in conjunction with game mechanics. What I mean by that is that if your art style is extremely minimalist, then I would like to see the RTS mechanics of the game also be extremely minimalist and meaningful correlate with what you see onscreen.

Also, I am a sucker for nurturing units throughout a campaign. So, more of that please. :-)

Thoughts?