Yuki-san is doing Star Saber, Kobayashi-san is doing the regular MP line. I'd say Mirage and Jazz are the toughest licensees to get - at this point. But it is possible they will be easier than Wheeljack or Bumblebee were - those were both considered impossible. Hell even Sideswipe was. I'd say the biggest challenges for Mirage and Jazz are the inappropriate sponsors - and their logo designs are directly part of the vehicles making it hard just to change the text. But then again TakaraTomy may not see it as an issue. I think it is likely the biggest challenges at this point are probably: 1. Mirage (Ligier is rumored to be unfriendly) 2. Jazz (Have a VW and Lambo, Porsche in the same group but still yet to have one) 3. Cliffjumper (see above) 4. Sunstreaker (Countach concept - will Lamborghini approve? As time passes I am getting worried). Most other characters either have made up modes or come from companies we know will work with TakaraTomy. I can tell you for sure though, TakaraTomy would not have gone down this road if they didn't think they could complete the cast everyone is wanting to see. As much as no one saw Wheeljack and Bumblebee coming, or Sideswipe back when he was announced - or Soundwave and tapes - is it possible MP-23 could still be a surprise in the same vein?