I hear there are plans to introduce naval units.
Then maybe this map could be used with minor changes?

A transporter boat could be used in place of the heli to transport the engineers.

I hope someone will create these units some day - I do not think I am able to do that myself.

I created a new map with atol shaped islands, based on the standard patches. It is meant for one player against the computer only. Due to the multiple islands, (and the limited capabilities of the AI) the enemy does not undertake much action, but I still find this map fun; just slaying the enemy.

To be able to play this map, you need the heli to transport people.

Instead of making this map dependent on the patch at https://savannah.nongnu.org/patch/?6877, I included some lua statements to turn the heli into a transporter in the "setup.sms" file of the map. However, I am not sure that what I did is an acceptable way of changing the heli unit. Please check this code! Also, this code does not survive a load and save cycle in the editor.