Im a regular draft player when it comes to MTG, so seeing an Arena option is nice. Although i agree with one of the later comments. Maybe more compelling rewards would encourage me to play it more. This is not necessery however. I still play arena on my draft night ("Friday" over here) and its nice to see the format change a little from time to time. 1 week Nilfgaard, 1 week skellige lets say.
Just got the idea of maybe some avatars or border prizes for Arena victories and such. That would definetly force me to play arena more regularly.
On another note. Please dont rump dump the current Gwent: The Witcher Card Game, for Witcher homecoming. I would have stopped giving you my support but i love this game to much. I want to collect all the cards. However im gonna lose my whole collection in like 6 month because of "Homecoming" yuck. You got me for two Gwents (The Witcher 3: Wild Hunt) and this new one. Im not about to learn a whole 'nother version of the game. PLEASE!!! change your mind.