Is your gacha content desirable? Can you imagine spending $10 on it? How about $10,000? Strong, recognizable brands will help raise the value of your virtual collections, but ultimately, the success of your gacha often depends on utility. It's best if you can make your gacha content an essential element of player progression. Completing an in-game collection should be hard, and upgrading it to its full potential should be near-impossible.
As for cosmetic content, cheap texture swaps may get you part of the way, but players can often tell if you made the effort or not. Take the time to make the premium cosmetics truly outstanding. Go beyond textures and models, and into particle effects, animations, sound effects, and ...