There are so many COC-like strategy games. Let's talk about what an ideal strategy game should be like.
I would consider Advanced Wars: Days of Ruin the definitive touch control strategy game, and a port would be perfect. but we have gotten some more modern strategy titles that work very well too like XCOM. The COC formula became very popular because of how easy it is to get into, and how back and forth things are if you have friends to play with.
I guess the ideal strategy game should be something like chess. Fairly easy to learn, hard to master and enough depth to keep people interested for 1500 years. I'd say Neuroshima Hex come close plus offers greater variety. I agree with above post about Advance Wars which has become a modern classic. I hadn't heard of X-Mercs but It looks good. Thanks for the suggestion @madreviewer.
