Woa thank you for the long review! Indeed I noticed a lot of things you mentionned while making the game. I wanted to have a good learning curve with some skills to acquire during the game, but it made the game maybe too hard...
I'll might do an update with balencing.
And yeah the bars are quite confusing. The yellow bar means what percent of the town has been constructed, and the orange filling bar means what will be added with all the current block. Destroying a block removes some percent in the yellow bar, and removes its value in the orange bar. So yeah the idea is to prioritize the buildings because they have more "value" while preventing the trees to be stack too much.
Thank you for taking some of your time, I'll definitly try your game too and leave an honest review! Thank youuuuu