The only way to make a 'perfect' or even a custom motormaster that resembles his former g1 self would be to incorporate his trailer into his actual bot mode and have his tractor cab as his feet. That's nearly impossible man (I've only seen 1 custom like that and I think it was a total kitbash).
Nemesis Prime is mostly all black with purple or teal and some red so I can't see that man.
Besides, even the top dogs use this figure as a motormaster and have used it in their combiners for Menasor.
He stands just fine without the armor too man and I think he looks like a gorilla without the super mode.
I do plan on adding a custom helmet box to him that also works as his window/cowl set in truck mode and I am using Drift's sword as his but it isn't painted yet.
Thanks though but I still love it!