RTS is fairly new to OOTP. No doubt it will grow into more over time. Markus puts a lot of big features in the game that aren't "full fledged" right away. They grow as the game does and improve. Storylines is an example. They were nice when new, but didn't offer a lot of variety. Now, they are getting pretty good. Still room to grow, but they do grow with each new release.
Rome wasn't built in a day
