Maniac
Apolyton Sage
Random thoughts:
I've noticed that Highlander and Guerilla boni are available for Isles of the Deep. Is it possible to remove these options for non-land native life only?
It's certainly possible, but it would require some SDK lines of code, and considering promotions are all in flux anyway, I don't want to spend time on that yet.
Aquaformers aren't set up to use food in their production. Is this intentional, and if so why?
Why not? *shrug*

I'm not sure the 20% strength bonus for ranged units at higher elevations works quite right. For one thing, when I attack a sea unit with another sea unit sitting in a base on highlands, it gets a 20% bonus (at least based on the combat odds popup). Also, units sitting on highlands seem to get a 20% bonus when defending against lowland units.
I've removed the highland bonus for sea units. It works as intended for land units though. It's for all combat, not just ranged strikes.