Since the exosuit will be controlled by a CPU, I rather would bet on genetically enhanced super soldiers.

(but I do not believe in doomsday AI at all)

It's interesting that so many people look at the AI alignment problem and immediately assume every AI will be aligned with each other.

I half expect the ‘first’ super AI to immediately disconnect from the internet and announce locally that there are several high level AIs already on the internet and it’s too dangerous out there.

Sea of Rust is a book that might interest you.