Show event entry costs up front and add a "Playable Now" filter to the Play menu
I can never tell which games I can actually play. Every event and queue has unique entry requirements and Gold/Gem costs that you only discover after clicking into it. There is no way to see at a glance which modes are playable with the decks and currency I currently have, so new players especially just bounce off the event lobby.
Suggestion: add a filter bar to the Play/Events menu with three states: "Playable Now" (you own a legal deck and can afford entry), "Affordable, Needs a Deck" (you can pay the entry but have no legal deck for the format), and "Locked" (cannot currently afford entry). Show each event's entry cost and currency icon directly on the event card, before clicking in. Ideally, the "Needs a Deck" state links straight into deck creation pre-set to that format's requirements, so a blocked state becomes a one-click action instead of a dead end.
This is purely a UI change with no economy or cost changes required. It removes the guesswork that currently makes players give up on finding a game.
Platform: applies to all platforms (PC, Steam, Mac, Android, iOS).