The working title was "Fantasy Mecha," and that combination was exactly why I started writing it. Of course it evolved into a much larger story, but you do get to see a number of battles. I wasn't gonna write about 30 foot tall clay golems without having them fight at some point! That would be...
One of my favorite ideas is a manoral farming system where the crop is both the product and the lord of the manor. Same "alien intelligence" idea that you have to grapple with. I don't have a plot for it yet, so it's staying in the back pocket.
Have one book under my belt, not good enough to publish.
Working on one about fantasy golems and their pilots, almost done with the first draft.
Have a third set in the same universe as the first one, still plotting that one out.
My worldbuilding style is to imagine one weird thing and then work...