Small accessory tools
I think most manufacturers are guilty of producing useless tool-sets these days. Even the Miele tools are a little too small for me.
I want the:
Panasonic 'scabbard' crevice tool (decent length),
Electrolux round dusting brush (decently full and soft),
Hoover upholstery nozzle (Turbopower 2/3 type, with bristles).
All tools able to fit on the ultra-long stretchable Hoover hose, with a decent plain handgrip on the hose - like the Hoover 'Freedom' & 'Sensotronic' cylinder hose handgrips of the 1970s & 80s.
I think those petrol pump / pistol-grip hoses put a hell of a strain upon the user's wrist joints.