Oh no, my title has been taken! As this game's dev I have to get it back! XD
Ah-ha! I was wondering if people were going to notice that refreshing the grid without any selection doesn't affect stability at all, very well played! ;)
I used this tactic to get my personnal high score too, since easy molecules really don't give that much Profit, they are more intended to balance stability as they are quick to make.
Adding complex molecules here and there randomly so that they would eventually appear is something that was initially intended! But unfortunatly, I didn't have enough time to code it into the game. It will be fixed in the complete version I'll make after the jam ends and the making of is edited!