twisting nether invented by the great almighty blizzard creators just another epic fail not to mention bugs disconnections bots and a very expensive cards it’s just unplayable anymore! even me I can do a better job and I’m not a game creator.
If so, you would want to start by finding the right forums. This forum is for the API used by third party sites and apps to program for integration with many Blizzard platforms/games.
The Hearthstone forums are here
That would be the best place to detail your specific concerns about the game, post in Tech Support for you DC issues, or post in Bug Reports for bugs.
If you really think you can do better, there are many gaming companies hiring, including Blizzard. You can probably find that info on the Careers page.