Leave it to DT to bring a car to a bike forum 
If you want your regen less sensitive, then turn the setting down a notch or two, you have several settings to control it's max already.
If you are cruising, then yah i'd just turn it off, because you at that point, are not really changing speeds much to begin with (until the cars get in your way) and freewheeling of course saves energy over braking, but if you need any kind of intentional slowdown, greater than just natural friction / air resistance etc, then regen is more efficient.
I have not really seen this on my Ribelle, basically because Florida is pretty flat, but Id assume if you were in a real hilly / mountainous area and peaked, coming down, you could use regen to control your speed and put some of that energy spent climbing up the mountain, back into the battery .vs. having to brake to control your speed descending. At the end of the day though, the only energy you are recapturing is, the last acceleration / or last climb, whichever applies !
@Grauteufel I think you make an excellent point. Those who learned on ICE bikes, have it set in their minds, THAT is the way to ride, and the regen is a whole DIFFERENT idea to them, and just like anything else, learning something different, can sometimes be harder than learning something new, because you keep trying to compare it to what you believe you already know. Those who learned ON the electric bike though, learned from the beginning how to use it and it's pretty much muscle memory now and they don't even think much on it anymore, just do it. Im finding this when I let people try my bike, with full regen, and they are like holy shit that's strong, Ill tell them, think of it as your rear brake, it takes a little getting used to but use the throttle to manip it, not just on - off like you are used to along with the clutch, and once you DO master that, it's a very powerful tool IMO.
Im trying to imagine a paddle on the bike, ok so you are fiddling with a regen paddle, you still will need to remove throttle if you are regen / braking right? , so it's basically another input to manage. If you want to load up into a turn of something, then rear brake it.... or regen it, because you are STILL under power and the ratio you need, is pretty much preset by the nature of the way it works!
Maybe im missing something, would there be any reason you'd want to regen while keeping the same throttle power on? If it's for power braking, then why not just use the rear brake which you are already used to?
Aaron
I learned on an ICE bike and have been riding them for 30 years prior to getting the Experia. Probably similar story to many, as these things ain't exactly cheap so you tend to need to have a few miles on the personal odometer before you can afford one... anyway, I think it took me about a hour to get smooth with max regen and one "pedal" driving the Experia, to the point where I don't use the brakes much at all in round town riding, only when getting on it in the twisties.
When I picked up my bike from the firmware update, I didn't bother to check the settings and it had reverted to the lowest regen; coming up to the first stop from speed was like a "no brakes" experience.
This is also one of the reasons I want to try to make the street and race bike as similar as possible so there are not these differences when I hope between them. Besides, nothing wrong with having strong brakes anywhere, it's the weaker ones that make you get grey hair!