Hmm. More inclined to have Gyro/Rocket/Jet Packs as more (Mecha)Gnome and Goblin theme as they would fit their heritage sets.
‘(Mecha)Gnome & Goblin Custom Love’
As for engineering mount.
This would be a great idea. Although, given the reskin and reuse of older things within MMORPGs… it would probably be some HD form of the Goblin Roadster from the Goblin’s Intro/Starting Zone which still seats 4-5. As well probably introduce the Gilneas Carriage as another “Five” Seater mount.