I have to say - GT 86 is exactly the successor to the Celica, so IMO, it's still with us. But I wish it could be in the same league as Impereza STI / Lancer Evo / 370Z are. So Toyota/Subaru really should create a kinda like GTS 86/BRZ STI competitive sportcars with the power up to 300 horses.
Supra is an another story. Yeah, it really should be reborned. Though, it may look superstitious and funny, but Lexus LFA seems to me as a highly performance, modernest tech alternative to the Supra, LOL.
I hope Toyota is going to create the successor to the LFA, cause they've already built all planed 500 units.