Agree with every word.

Most people hardly have time to play ranked games, why anybody would expect they will play Chaos?

I even haven't tried the mode since, first of all, creating a viable deck is a huge work. I would be happy to test decks in Custom in hope that they might work in the Ranked mode. But it's too long especially when your deck isn't that great in Ranked and you have to play A LOT to get back higher.

Secondly, there are many guys with a vast variety of cards with huge advantage in this mode where you can play cards from all domains.

Thirdly, what can Chaos mode teach me? Playing in Chaos means you lose GU experience and expertise since the mode is a pure fantasy that has no relation to the real game.

If they want to make Chaos mode viable, to get a chance to, they should probably hold competitions with great prizes in this mode. But I won't play anyway since "the rich" have a much bigger advantage in this mode than in ranked games. (And anyway I don't want to play more than 10 (ranked) games a day.) But maybe there will be people who will play in the mode in that case.

an improvement on the monotony presented since Mortal Judgement Edition settled in the meta

Personally, I would be glad if they released new Core cards. A good way to raise crypto for the poor to invest the coins in better cards or just hodl them. That would make the game more lively, I believe.