I am definitely interested. Good idea. I'll buy it from you. I don't care about paperwork, major vs minor modification, STC, 337, 8130, TCDS, NORSEE, OPP, etc. This falls under the category, "Creature Comforts" along with air vents, sun visors, and cupholders. The other category is "Do what makes sense to keep your plane in the air". I have yet to read an NTSB report that summarized the interior furnishings of the plane or even noted any modifications. I don't think anyone is verifying that the GI-275 was installed by a Garmin certified "avionics technician". It seems they spend more time verifying that the instrument was functioning as intended. I have read reports reviewing inappropriate or lack of maintenance and ineffective repairs, but nothing regarding the burn certs for the leather covering on a guy's yoke. I am ranting because I have seen great and well-intentioned ideas come up on this forum that end up vanishing because people instantly question the legality of everything. Not just here, it's worse on the Facebook groups. A guy recently posted a pic of his panel illuminated in purple by an LED light strip. Born and raised in LSU Tiger country, I thought it looked great. The Karens came out instantly. End of rant...
I would much prefer a smaller footprint without a gauge. As small as possible.
On a different note: I recently replaced all of my door seals after sitting in my plane waiting out some rain and watching water drip in thru both doors as well as the avionics bay.. I recently parked outdoors for a weekend event and the plane was unexpectedly rained on soaking the copilot seat. I read on this forum that slightly inflating the seal prior to closing the door can prevent this. Of course I forgot to do this. And I don't like the stress on the door and the seal when closing with partial inflation. If your controller comes to fruition, I will probably look to add a 2nd switch mounted by the baggage door so I can inflate after egress when I leave my plane uncovered outside.
-David