The issue. Most people playing casual are using experimental decks that would not work on the ladder. Then comes the scumbag who doesnt want to risk dropping in the rankings so he uses a ladder deck on casual. it really isnt cool and if you do this you are a deplorable player. What you need to do is make a version of your deck with SIGNIFICANT creative changes or just dont play casual at all. there is no risk to just playing ranked, its not that serious. i dont care if its 3am and your super baked, if youre using mech hunter, token druid, etc. you cant be on casual
Casual is casual because you are not competing for anything in particular and as a result do not have to sweat winning or losing.
It is not casual because you are only supposed to play certain things.
I swear when HS first started there were an incredibly small amount of you players in the game that thought you should be able to dictate what other people can or can't play.
I don't care what I'm playing. Whether I'm playing my Spectral Pillager Rogue OTK, Druid of the Saber OTK Druid, Weasel Priest, Spiteful Mech Mage, Ice Cream Shaman, Dragon Patron Warrior, Quest Mage, or Reno Mage I'll still be happy to get you to break your keyboard and allow yourself to feel offended by a video game.
If you're playing an experimental deck, wouldn't one of the things you'd like to experiment is how it stands against the top ladder decks? You should be grateful that you have the opportunity to test your deck against a top ladder deck, without playing ladder.