Casual infinity is a well designed level for casual players. It uses backdrop and a variety of tile types to look visually appealing. It makes good use of checkpoints to be forgiving and Jems to encourage a bit of exploration. Having the package plus the regret gates is smart because it shows the player the objective, shows them a way that won’t work, and thus gets their brain working on a valid solution.
The puzzles are appropriate for a casual player, but still require some thought. I really enjoyed the reuse of space and going back through an area that was blocked off by spikes.
My singular piece of advice would, once you have unlocked the tiles, to have hidden areas with larger jems so that some players can get a high score without having to speedrun the level. That will add some replayability and cater to a third audience beyond casual players and speedrunners. Overall, this level earns the Popdonk Recommends badge for great design.