I've spent most of my night using a mix of Robot Replicas Jazz (base figure), A diecast Shelby Cobra (car parts), SS-38 Optimus Prime (Hand), and Alternators Jazz (head), to make a design i think would look good as a character design for Jazz.
I have made Blitzwing, SS KSI Boss (Base), Universe 2.0 Starscream (Wings), POTP Starscream combiner mode (Cockpit), Zildgian's Blitzwing sword (ya know what), Generations Blitzwing (head), ROTF Megatron render (legs).
Lightning round! SS Blitzwing into Starscream, TFA Arcee into TFA Nightbeat, Bumblebee Arcee into Combiner Force, and G1 prototype colors, SS Bumblebee Optimus into Shattered Glass Prime, and Nemisis Prime, SS Cliffjumper into Hubcap, And TLK Bee into Cliffjumper.