Card games, the core of it is to pass time, which means mobile device is really needed if CDPR really want to boost up the player playing time.
For example, if you look among your friends, I'm sure those who play hs will mostly play it on mobile devices, unless it's tournaments or streaming. A good pass time game require to be able to play anywhere
Homecoming is a step to the right direction, and two row and bigger artwork will help mobile version look better, so the eariler we get mobile version, the sooner we attract a large amount of players and playing time
So...
DON'T YOU HAVE PHONES??