In my view, too much can be too much. Super stiff, super light slalom boards can be excessively demanding to ride for common people.
That said, in my view and experience at least, Starboard slalom boards are a bit behind that line dividing a fast yet comfortable ride from a bone shattering one. As I said, 6.2 (supposed it's for real) is a "nice" weight for a 94 lts. slalom board, but still falls far from the best figures from the competition. My slalom board in that volume range is 5.6 (for real: measured on a scale, actual weight, not a +/- 6% figure), and rides unreproachably comfortable and controllable. Reasons given so far for not introducing lighter woodcarbon iSonics still sound fake.