Due to recent news surrounding Star Wars Battlefront II and EA, I'm glad you mentioned this. I'll buy costumes, auras, vehicles, storage, new powersets and superbases or superbase pieces(*hint hint) but I refuse to buy anything that has a random chance to obtain one of these. If companies are not competent enough to monetize correctly and can only fall back on gambling habits, they don't deserve to be in the gaming business. As an example, I always thought Marvel Heroes could have sold alternative travel methods(example The Thing also had a skycycle at one point as well as the fantasticar), auras or new zones instead of using Fortune Cards. I really miss that game but I hope the devs here can pull some inspiration from the many super power effects they used in the game, such as Ghost Rider's Ride or Scarlet Witch's Chaos Warp(beautiful bubble of death).
Sorry for the tangent but it is foremost in my mind atm and well, they did have 'lockboxes' and now out of business.