Aatrox is Illaoi but better in every way
The exact same 1vX healing fantasy with more agency, more target access, less counterplay and lower cool downs. Also Aatrox is actually a lane bully unlike "minion without my ult" Illaoi who doesn't exist before level 6 and still isn't scary after, as evidenced by her having the lowest KDA in the game. And he scales better. Oh, and Aatrox can actually keep people in his distance to do his thing where Illaoi can just be baited and walked away from and then killed for free on the reengage.
Why even bother? Aatrox is complete freelo past the ~five games of learning curve and the only thing he's worse at is getting through ban phase.