OK, its time for me to add my 2-cents. I think the Quad is too small. Think about that for a minute. The screen isn’t too small just the case and controls. What is the point in having a Quad so small that the scope leads drag it off the work bench? 
The more typical hand-held o’scope has the display at the top (same size or smaller), the controls in the hand grip, and is more rugged. The Quad in this hand-held style has no competitors for price vs capability in the service industry. What a market penetration that could make!
I am not talking about changing the electronic circuits, except to build a second circuit board with the controls and jacks in the handle. This would allow an add-on rubber protective glove and a sky-hook (D-ring). Maybe you could offer both styles, the current style and an optional hand-held service industry style. You could charge more for the rugged hand held style. More profit for just adding rubber and plastic.
It just makes sense, especially when the optional custom firmware storage is already factored into the design. Each service industry could have its own custom firmware to really penetrate that industry market.
In the concept picture shown below the rugged BNC probes and mini-USB jacks can be placed at the bottom so the cables drape down and out of the way. The rubber glove would prevent sliding around on a work bench, and the sky-hook (D-ring) would be at the top. In this style, the user (left or right handed) could use their thumb to press buttons and this would free up the other hand! The logo is compliments of justblair.
Being the smallest is good in some cases but not in all cases. I believe that this is one such case (no pun intended). 
Of course you absolutely must fix the capture buffer trigger firmware as a minimum! Using BenF style pop-up menu system would make one thumb operation even easier.