- I voted YES on the red hoses but I don't think it should be a first priority.
- I think that new DSV mouthpiece might be a more important sales feature to non vintage customers. The DSV mouthpiece could turn a perceived negative (double hose free flowing) into a positive... For example, "It has a DSV mouthpiece just like re-breathers".
- We vintage divers are so used to the double hose free flow that we unconsciously compensate for it by holding the mouthpiece down or swimming on our stomachs. It's no big deal for us, but a non vintage diver who learned on single hose might get scared off by it.