It would be awesome if 
ludei or 
Ashley can include the pure support of admob ads to mobile games. This is the last missing featuer making C2/Ludei's cloud compiler perfect.
I've opened a "Idea" at ludeis Help Desk. If you agree with me please write also that you are interessted in this. Maybe we can make it possible
Link to Idea: Ludei
And as far as I know is the latest CocoonJS plugin open source. Maybe one of our community is able to add the AdMob SDK to the CocoonJS plugin?
Feel free to discuss here