Indulge me here as I would add my "wish list" for a next generation Darwin....I am more than satisfied with mine but here goes:
1. Capacitive (touch) fire button.
2. Capacitive (touch) up and down buttons to adjust wattage with software update to allow both buttons
being touched at the same time to "lock/unlock" the wattage setting.
3. An offset adaptor than can be attached for tanks.
4. Color options.
Good input. I'm not totally sure about capacitive buttons, I like the click. It would be nice to have it sealed up though, so it might be the way to go. If wishes were fishes, I would like some kind of locking mechanism where the arm can pull away from the body of the Darwin. So you could adjust the clearance of the swing arm and lock it into place depending on what you have installed. That would be cool!