Actually there's a picture I came across yesterday where the 120V charging cable is routed through the duct next to the charging port -- presumably to reach whatever device is sitting underneath the car to pick up the inductive charge.
I personally think these would be fine at 1.5 kW -- I'd love to pull into my parking spot at work and be automatically connected for 8+ hours. Or airport garage. Train station. Etc. Plenty of applications even at 1.5 kW.