The need for a hydraulics off switch is presumably for pending hydraulics failure where you may have intermittent hydraulics (maybe during fluid loss), and the last thing you want is to be putting some juice on the stick making an input and have the servos kick in on you. Better none than some here and some there. I found hydraulics off no real drama, similar to the 206, and if you don't get too tense and fight it you can land it with no real difficulty in the hover or more easily with a gentle run on. Because a loss of electrical power fails to hydraulics on (like the 206) I find it makes it easy to diagnose any hydraulics malfunction quickly between an electrical switching problem or an actual hydraulics failure.
If they are going to mod anything on it, I reckon it should be an external power plug so you don't have to jump it with the panel folded over. I just hope Mr Robinson has to jump start his a few times to realise its a bit of a pain!!! Otherwise I reckon they are beut to fly.