Extra Credits - Free to Play Is Currently Broken - How High Costs Drive Players Away

Dota2.
Nothing buyable affects gameplay in any way and is 100% cosmetic.
Everything cosmetic also drops while playing the game.
A fully functionable market and trading system to exchange cosmetics for other cosmetics.
Everything that affects gameplay is available the second you start the game.

Best free-to-play model of any game i've ever played for sure.

All of the above, but Marvel Heroes instead of DOTA2. Everything can be acquired in-game for free except costumes. Costumes are rather expensive, but they are purely cosmetic. The only other thing you have to buy is extra storage space. You can buy heroes instead of earning them. Buying them typically gives you all of their costumes and gives you storage space for them. It usually works out that the hero itself is free and you are really buying all the costumes and storage for a discounted bundle price.