I saw the packed game mode option for a level. Finished it... and got nothing. The level was already 3 stars. I know it's currently an alternative for 3 stars, but...

It would be great if by selecting packed, we would have the chance to earn additional stars. Separate to the three main stars. Maybe each packed level is only worth 1 or 2 additional stars.
Also, it would be nice to have some visual aid to recognize you have selected packed mode. Instead of just a check mark. When clicked It could swap the stars out to different colored stars you can acquire. Something visual like that.

I almost didn't notice the packed game mode button, it would be nice if you guys made it a bit more noticeable. Perhaps making it a different color than the rest of the white text.

Love the game so far. With how casual I play. It really reminds me of Train Valley 2, and Mini Motorways.