Where you have Ranked Battles, Challenge and Practice… it would be cool to have a mode called “Playbook” or “Strategies” where you can construct and save theoretical teams.
Sometimes you want to strategize and come up with cool team combos… and also visual what they would look like. By doing that, you can visually take the time to see how a team would look like and be able to add & remove cards, change around the orders and change summoners etc.
Basically take the same team creation UI/UX in ranked battles, but just allow users to assemble a team, edit it and save your best strategies.
I’ve often had cool card combos and forget them over time… and as new cards and rules get added, I can go back and improve or alter those teams.
Maybe in the future… users will then be able to access their premade teams during ranked battles. That would be really cool.