We already know how fun and nice the game is. Therefore, let's go to the negatives:
I don't see the point to spend money on upgrades (Furniture, Barista, Coffee...) if the goal is to adopt all cats and those also cost money. Suggestion: make cats adoptable not by paying for them only, but also by having a good enough reputation of your cafe. The happier customers are - the higher reputation your cafe has. And happier customers are because of better environment, service, coffee, and more cats.
The game still runs on the background while any menu is opened. I can't stay there to read item descriptions or look at my progress, achievements, etc. Not good.
Laser pointer is a waste of money.