I love the idea of the mobile link, but I find it less convenient than it seems to be.
I tried to use it, installed into my Android, linked to zwift, it shows several controls including elbow or chatting options. good.
However, I sweat heavily, poured onto my phone so the capacitive touchpanel doesn’t work. I had to wipe it again and again. Moreover, I’m confident that my android will fail someday because of my sweat.
I suggest voice control on the mobile app would be very useful, even if the voice control is so primitive that it’s able to just do u-turn only.