I tend to not trust any random game where the house is in complete control of the process. I've always just directly bought skins I've liked, rather than gamble and pray.
For what it's worth I hope this whole gaming "gambleconomy" crap dies out soon, and maybe then game studios will spend more time innovating, rather than writing up nice shareholder reports saying "our 10 year old game with no updates in 5 has made us 100m this quarter!"