You may have missed it int he manual, but the rnd of the brake pedal is reversible. The way it come from the factory is better if you mostly ride sitting down. On the other hand, if your riding is mostly dome standing up on the pegs, you should reverse the brake pedal for better accessibility.
So far the only option to have both modes in one pedal is a part from AltRider ($91) allowing to have two separate platforms next to each other for reachability in all cases.
If you’re like me, brake and clutch levers are consumable. KTM clutch (p/n 63502040000, €60) and brake (p/n 63513002044, €55) levers are ok, but better controls do exists.
Warning when installing the levers: the pin holding them are not the same on the right and on the left. On the brake side the pin (p/n 64113006000) screws in the front master cylinder housing and is also locked with a lock nut. On the clutch side the pin (p/n 64102038000) is only retained by lock nut, it doesn’t screw into the body. And yes, the smooth top are just bit of plastic to prevent water pooling inside the hex recess, and those plastic bits are not shown in the part list (don’t lose them!).
Watch out for the Chinese knock off on ebay or other. People have ordered parts and they never shipped, and some received 790 Duke parts (they are different, the Duke has a radial master cylinder).
Handlebar clutch switch
There are a few reports of the handlebar switch failing, and the only notice is the Quickshifter no longer working, or the bike refusing to start when a gear is engaged. The replacement switch come with a cable long enough to get into the headlight, but you could just change the switch as it cost next to nothing at your nearest electronic store. See this how-to for example.
A shorter clutch lever, activated with two fingers, is harder to pull than a full sized one of course. Short or long, Camel ADV made a small little gadget making the clutch course longer and diminishing the effort at the lever. It’s called the One Finger Clutch.
Someone on facebook made another longer clutch extender, no idea of availability or cost:
Clutch hydraulic conversion
Hydraulic conversions for the clutch are available as well, Magura makes a conversion kit ($330 or so), available at your nearest Magura distributor (Rottweiler Performance or magurausa-shop.com or touratech for example). Touratech made a video describing the install.