Since I discovered CIU late last year, I always found it weird that UFO chickens are the freckled ones. This is because inside the UFO they shoot normal eggs, while outside of it they shoot drone eggs again. So, I think that these should be replaced with the UFO chickens from CI4:
I just realized this idea has been suggested before (AmirMohammad.as idea). But to make the new drone UFO more interesting, it could fire drone eggs that chase a player for 3-7 seconds and then follow a straight path. During this time, the egg’s antenna would flash a bright color and could collide with the player. Once the egg is turned off, it would act like a normal drone egg:
The chasing egg:
Perhaps these UFOs should appear on slightly higher difficulties than normal UFOs, with the length of the egg chase depending on the difficulty.