I love the art style, (it's so cute!) I really like the amount of freedom the point system gives you. I have a big problem with the fact that upgraded items and non-upgraded items salvage the same.
Being able to get back some of the dust you put into the upgrades would be really nice, Ways to get bonus points would be cool and Saving when you buy cash in bulk might be kinda nice.
Overall, I love this game, it's definitely going on my wishlist. Great Job!