Ah you were saying serve ads on the flightdeck displays! Ok that's innovative- I'd recommend featuring big watches, mirrored sunglasses and divorce lawyers.
Where's the commercial benefit though? The cost of certification is huge so upgrades after initial certification don't happen unless the tech has big cost benefit (or safety, which is also cost at second order).
Hence A320 still running on Motorola 68000 of Sega Genesis etc fame.
Happens fairly regularly but for passenger issues rather than technical- medical emergencies and disruptive passengers usually.
Airlines have contracts with companies who provide a sat phone link to doctors who have the flight information and medical facilities at possible diversion airfields. Eg MedAire.
I'm an ex-military now furloughed airline pilot working on a flight planning tool to save trying to spot the needle in the haystack that is the current NOtice To AirMen system.
It's not the engines that would prove limiting to cruise speed at those altitudes, it's the aerodynamic design of the wing. Airliners are flying at between 78 to 86% of the speed of sound, you can't improve on that in a way that would be dramatically noticeable without a huge redesign.
Compact turbojet engines rather than high-bypass turbofans like modern airliners. Blended into the wing for less drag compared to underslung wing pods like the contemporary rival 707.