That's because he was always built as an extra moveset, and before that was a clone. Makes it even worse that the game included many more clones of Lizardman that one had to fight. They never gave Aeon his moment to shine.Aeon needs some love honestly. I've never paid much attention to hims since he doesnt seem interesting enough. I hope if they do include him he has a more brutal moveset.
On another note I hope they give us photo filters for CaS and a lot of poses to work with I know some people want the option to slow he animations down and have moves from a character's move set as pose options. I think that could be cool. Maybe alot the win/loss/timeout options. This is assuming they go with the card thing from SCV