I agree with the 'less is more' principle. I prefer to ride the bike using my own skill and ability rather then let the bike do it for me. Hill start assist? If anybody needs this then I would suggest they should not be riding a bike in the first place!
You're an idiot.
I have a Bandit 1250 and that has no ABS, no Traction Control, no slipper clutch, no quickshifter, no TPMS, no steering damper, no power modes, no automatic suspension, no heated grips, no cruise control, no outside temp gauge, no auto lights, no keyless control, nothing....
There isn't much that I do differently riding that bike, to when I'm riding my GSA. But having all the extra comforts at hand when you need them most is very nice. But it certainly doesn't do anything for you, except save your ass in the milliseconds before an accident.
On a Sunny warm dry day, your tyres will save you from just about any mistake so most gadgets are not needed.
But on a winters cold wet raining day, your 'gadgets' are a welcomed safety net which might just save your neck. Why would you choose not to have them?
So thinking these things take something away from the rider skills is nuts. They add to your safety, nothing else.
I use Hill Start Assist all the time when on 'second man drop' duties, or waiting at traffic lights, or on weird cambers and gradients... it's actually very useful when directing riders to have both arms free, and legs planted on the ground while stationary.