Note: Sonic Colors (DS) is not to be treated as Sonic Rush 3

Blaze, kind of in love with Sonic in Sonic Rush 1 so they should make another one.

Sonic Rush 3 wouldn't be bad, but I would personally prefer a Blaze solo game. Without Sonic taking up half the spotlight, there are more opportunities to flesh out Blaze and Marine's character. Furthermore, with a Sonic Rush 3, the developers would have to find some way to work Sonic (and probably Tails) into the story, or find a way to work Blaze in if she comes back to Sonic's world. With a Blaze solo game, they can avoid this pitfall altogether. Blaze could still use some character development, especially a backstory, but Marine needs this most of all, and if pulled off well, she could be a great sidekick for Blaze.

You make, a good point I agree with you Sega should make Blaze and her own game SEGA should also make another Shadow game and Silver as they own games too I'd don't see why SEGA not doing it? they deserved more games as well.

Shadow the hedgehog game? should make blaze a solo game too I don't see why not?