Bluetracker
Tracks Blizzard employees across various accounts.
Suggestion: Show "Fourth Test Season: X days left" message on main menu only.
It's good to know when the season ends but it gets frustrating real fast when it shows up every time you click on "Play" button in-game. Not only is it unnecessary to show it every single time, it also blocks the deck list.
It can even stack upon itself!
So, my suggestion would be to show the message once when you start Hearthstone (that is, show it on the main menu and be done with it until you restart the game).
Zeriyah
Hey guys, there's just 6 days left in the Fourth Test Season!
...just kidding. Yeah, this is coming up a bit too often, and isn't quite functioning as intended. We'll get the reminders to remind you about the reminder less often in an upcoming patch.