This is a speculation thread and I know there are more like this somewhere so you dont need to remind me.
Anyway what would you like for a forerunner style aircraft to look like and how would it shoot?
It would look similar to a Mongoose without wheels.
Except it would float and have the sane design as all Forerunner structures.
And it would have 3 Sentinal Beam-like weapons attached to the front of it.
Kinda like a Ghost, but with 3 lasers.