After looking at the Traits preview, it's clear Halfling will be the superior Rogue(and they probably should be lore wise).
Innate +10 piercing plus select 'life of mischief' for another +5 pierce seems very strong.
Deep Gnome stand out as getting 'almost' nothing at all that would benifit a Rogue(which sadens me because that was my prefered race). Except the Activatable: Liminal Step. That's essentially another VoS. Although it's only going to stealth you for 15 seconds on a 20min cooldown. Still, that's not terrible to have.
Most of the race choices give an option for a root removal clicky which is nice.
Goblins seem to get some Pickpocket focus getting that as an innate and with the choice to select the trait to let you have a chance to pickpocket on autoattack.
All in all, i like the dirrection they've gone to make each race more distinct. Not sure i love the clear race+class BiS combos i can see, but as long as there are differences, there will always be some things better then others, so i get it.
P.S. DEVS please give DG +5 pierce