Have 'heII queues' for play modes for standard, explorer, and historic
In play modes, I frequently come across the most broken, busted decks that should only be used for ranked play. For example, in Explorer Play I frequently come across mono green ramp decks.
This is why I have to play the most broken, busted decks on Ranked play (I can't play new interesting decks on Play mode because I know I'm going to get thrashed, and "if you can't beat them, join them").
As a result, my opponents hate me on the ranked queue and usually rope me. For example, using the Book of Exulted Deeds on Mutavault combo. I realise that this is so frustrating for opponents that they could quit MTG Arena.
The heII queue system is extremely successful in the brawl modes so please introduce it to the Play modes.
One additional advantage to this is that it will get lots of YouTubers talking and the more people who talk about MTG Arena in a positive way, the better the publicity, and the more money WOTC will make.