God you really patient. I hope that was something to break tile that big.
About single blocks. Yeah, for your knowlegde, there was even NO time restriction before for destroying single blocks. The friend of mine just text me like 6 hours before deadline and 30 minutes before my bedtime "Hey! The game's pretty easy, make at least some penalty for destroying single blocks!".
So, yeah, there's definitely some problem with time balancing. I'll update the game after the jam if you interested