For example the ones I can thing of right now include-
Base Building.
Large or non-existant unit cap.
Resources.
Which is about it which is rather amusing considering how much I play the games, right now I have a simple 2D based art-style and was hoping for idea on what features I should include into my game?
For anyone interested, some examples of my simple artstyle are below in the form of 2 types of tanks:

