The stacking annoys me as well, and I don’t think I have a solution for it. It was designed for the counter-like icons, and I agree that making the underlying unit sentry-greyed out would have looked much better instead, but it’s not something I can do with my set of abilities.
With regards to the tileset, I’m absolutely open to others doing whatever they want with it because, as you noted, my version is already a clone and a fork and if would have been hypocritical of me to not allow that. That and it doesn’t make sense to me to try and keep anyone from editing things.
Sure, I’m absolutely open to revisiting the battleship. Right now it’s representing a composite design of kinda WWI-era dreadnought-style battleship (hence the smokestacks) but I’m going to try a WWII-era battleship as well, something taking cues from the Yamato, the Bismarck, the Missouri, and the Iowa. I was never absolutely satisfied with what I had there.
Then again, remember that I’m very limited with what I can actually do, as again, you can put only so many details into a 15×15 canvas, and I still want to keep the icon facing to the right instead of turning it towards the viewer like this.
As for the ironclad, the original icon seems to be depicting the HMS Warrior
or a similar ship, so the smoke and the brown masts make perfect sense for that. I’m not sure I want to change the ironclad much, if at all.