It's the future! Just because it didn't exist before, is no excuse for not having it now. That sounds suspiciously like the old saw "If man were meant to fly he'd have had wings!" I'd think jetpacks or gravity repulsors and/or vehicles that use them would be more likely now rather than less.
Short: More options with the Tailor, both physical and sartorial. Mid: More ground content, and more exploration planet-side. Long: Finish the KDF 1-50. Add a Romulan faction.
Great idea! I especially love the part about ground missions! I'd really like to see each planet have a story arc built into it. I'd love to do some actual planetary exploration. Ground vehicles would be a great part of that.