Well, yes
Okay, I'll have to try harder and see how I can I do it.
That would be way beyond the current code. Unless you mean "UFOs" to shoot down on the Geoscape - that could be arranged.
Isn't that a thing since the start? Also, how exactly do "hunter UFOs" work mechanics-wise? Do they leave anything upon defeat, or do they always blow up? Is there a way to neutralize them somehow?
As an alternative for Godzilla, what about having an unit that's a giant foot that represents the reptile crushing stuff around?
now then, more bugs. First, I attach a save about a strange thing that was probably not intended: A Large UFO that became the battleground with a wooden castle that you see in the save, filled with Alien Hybrids that do nothing except to wait for you to go there. Retreating causes the UFO to disappear.
Second, is that intended that tanks can work underwater?