Cyber Route requires mucho Nuyen... which the driver might want to use for a nice vehicle or two.
Tailored Pheremones and some other bio/cyber stuff (Rigger control could be handy) are definitely nice but make sure not losing more than 1 point of essense, spend the rest on Magic + Adept Powers.
Kinesics, Voice Control... I'd never NOT get Commanding Voice as Face neither. (Fits the transporter as "You only hired me for 3 passengers, there's 4 of you. Get Out Of My Car.")
Imho, adept powers for a face are never, ever a waste... it's where the most power comes from.
(You could, for example, tell 20 enemy guys to "Shoot yourselves in the head" and do more damage with this one action than a maxed out gunny or sammy could do in 2 turns... but that might be munchkinism.)
Edit: Oops, missed the "core only" part... But even without commanding voice, all the rest of the stuff FastJack mentioned are well worth going (part) PhysAd... You can always get Commanding Voice later with karma points when you're more experienced with the game.