Wow, there's not much I wouldn't do for a Classics, Supreme Class please, Metroplex! But also:
1-Ultra Class Rodimus Prime
2-At least one Combiner: Devastator, Superion...
Made of one Ultra and four Deluxes!
3-A Classic Omega Supreme would de nice(though there is an Animated version coming at us)
4-A BIGGER jetfire!
5- hey, why not a Pretender? If it's sharply executed, I think it could be fun.