I’ll definitely add new pieces to the game. I plan to implement a system where, whenever you reach a certain score threshold, the game will offer you a choice of 3 new pieces. Player will be able select the best the one with the most synergy with current pool.
As for the using wrong placement as a way to introduce new elements; this is interesting because even if player do things wrong, it can still lead to interesting interaction for the player. I’ll definitely give that one more thoughts.
Actually, there is somewhat similar secret mechanic with the meteor&crater but probably no one has discovered what craters do yet 😄
Thanks so much for playing and taking time to share your thoughts <3