Hello! So do u have free time enough? If so, then would you create a Mecha Sonic model? For reasons: it's very sad to see him sitting in the shelf for years since Sonic & Knuckles CD... And nobody remember him anymore. If you don't want feeling creating it, then I understand and respect you. ^^
Can’t say when I’d do more Sonic models, as I’ve had even less free time for personal projects/fan art. And truly speaking, I’m not a committed Sonic fan aside from his Genesis and Adventure games, so my knowledge of other Sonic properties is fringe at best, unknown at worst.
I did do these a while back, so maybe these can hold you over for now :)
Search my Sega tag for more images.
You can get the models [here].