I'm sure this is asking for WAAAAAAAAAAAAAAAAAAY to much, but if we're talking about the ideal transport, a mobile fortress would be awesome. Like a big ominous tower on mechanical, scythe-like legs.
If not, a small mecha might be nice. I would be playing Arcanum, so I could probably supply the magical items to run it if I could just find a high-level Gearsmith to build it.
Barring those, I suppose maybe I could control a Foul Dragon from a small installation in the ribcage. Not quite so grand, but at least it's intimidating...