For Jazz you've got G2 Jazz and Stepper/Ricochet (existing reuses of the G1 mold). Wouldn't mind them doing it as Jackpot (like they did with the Animated Jazz toy) or Kick Off - because Action Masters won't get MP toys anytime soon! Could be a Dead End if they do Stunticons as just repaints.
Mirage... well they could do a transparent one. They could do it in red like the Diaclone as a new character. Or black. Or Machine Wars Mirage colours. Or the unused G2 colour scheme. Or Drag Strip if they do Stunticons as just repaints.