I'm pretty sure this game is still in development since it seems like new character art and voice lines were added. Obviously these are only possible inclusions the game is wonderful as-is and nothing really needs to be done (especially considering it's donation-optional and a lot of work and love has already been put in)
Bugs:
Music has stopped working
Specifically on hard mode, if you continue to play post-win, the ingredients that require 1 click to add (ice, whipped cream, candy, caramel sauce, and chocolate powder) start to glitch and require multiple clicks to register, despite the sound for them being added playing. If you click even once after they have appeared (accidentally discovered while spam clicking) it decreases your rating for each click above what was necessary.
Possible features:
Customizable cow! Offering different skin tones, hair colors, hair styles, and eye colors (not all would have to be added, just different things that could be added)
Chonk: either options for less slender barista models, or a new game mode where she produces milk based on if a hunger bar is filled, and the player would have to manage her hunger and chest-fullness, the "reward" for this new game mode would be the inclusion of a heavier set barista. I'm guessing the model options would be less of a hassle to do but the game-mode was interesting enough to include.