Single Game Matches

With Eternal league apparently coming out soon, it made me wonder if the game would improve with the addition of some sort of single game mode. Currently the game has many options of play, with ladder, private leagues, Norsca Arena and the soon to come Eternal league. All the options are great and bring much variety to the game but all have the same requirement, which is time commitment to get anywhere in sense of progression.

I know a few people which used to play the game but quit due to the game requiring far more commitment in terms of time and friendly matches are kind of rudimentary and not particularly rewarding apart from practice for upcoming tournaments.

It made me wonder if the game having something like a bulletin board system for one off matches where you can make a custom team, make a bulletin for a game with requirements for someone to apply and it just being listed in a drop down menu for people to peruse.

Unsure if there are many people which would play something like this but it did make me wonder if it would appeal to some sort of a crowd.

Any thoughts?