Will you ever port HTC Messages, Dialer, Contacts and Settings apps?
Those are the last HTC apps that have not been ported yet.
It could be the System UI too... But HTC A9 uses the stock System UI, so there is no need to port anymore.
I mean... After those 4 apps get ported, every device that has CM12.1 available could have an almost complete HTC Sense rom.
What do you have to do in order to port an app?
Do you need to change the code inside the app, or make the libs work on other devices? I have no programming skills, like 0% knowledge, but im just curious.