I think the purchase of a merc is probably the best was to support the game.
And the booster idea was , for me ,a very good option.
I never once considered buying cases. It’s a roulette wheel game of chance, with the odds of landing on the card you want being extremely slim.
Not having all of the loadouts available for easy purchase / obtainability gives something to be unlocked - which for me keeps the game engaging, and makes the times when I get a good card that much more appreciable.
Like the Silver Redeye that I opened, when I returned to check out the game after a months long hiatus. It actually encouraged me to unlock him, over my remaining unlocks Phoenix Phantom Aimee Vaselli and Kira.
And I’m not fond of snipers.