Kernal change - Who will not notice the difference?
GNU GUI and applications like libreoffice are the car.
The linux kernal is like petrol/gas.
You need fuel but you do not excited about fuel.
I can not find a application that would only run with a different kernal.
The Raspbian respository is pretty much identical to the complete Debian.
Freeradius, Wireshark, LibreOffice, the usual Web servers, and web browers, vlc, vnc, ssh, ftp, tftp, SQL databases; it is all there.
What would be helpful is a more powerful processor.. at the same price, power consumption, and same board form factor.
The free technical assistance from Broadcom early on has proved a great commercial investment.
A generation of engineers are learning their trade on Pi. Which is very good for chip sales long term. These people go on to design set top boxes, and washing machines. Broadcom could cut a deal on a more recent ARM, or the Pi people should talk to the ARM competition.