Hello! I've been playing this game for years now and I'm more than happy to see that it keeps growing and evolving. It's defintley understandable that the new client is not perfect, and putting the deck editor and the store interfaces into the actual client is a blessed change - but there are a few problems I'd like to adress to help you, dear developers, improve the game.

Firsly, I feel that the default size of the client's menus UI right now is rather bombastic;
http://i.imgur.com/nlGQyID
It might be just me, but something just feels wrong over there, maybe it's the size of the letters compared to the buttons themselves.

Funny thing is, I have the opposite problem when it comes to the options menu:
http://imgur.com/k5TG7JG
It's really hard for me to read what's written there

Another things: it is somewhat annoying to see the PS4 contoller interface icons; Although I'm sure it's obvious and that they will be gone quickly.
http://imgur.com/m2xeJTW

I would also like to suggest that as many games do, resoulotion changes should prompt a countdown, so that no none will get stuck with a resolution which can't be changed because the options button is hidden behind the windows taskbar:
http://imgur.com/EJh3bTr

And one last thing, which is not so critical but is also annoying, is the font in game; it's not that it's difficult to read it or anything, but it is just so generic and un-unique that it made the game feel a bit like a browser game. It simply seems unpolished:
http://imgur.com/lbKyMh2

As I said in the beggining - it's all understandable as the game just got a complete overhaul; I just wanted to point out a few things that could direct you towards an improved client.

You're awesome!
Best regards,
Me.