Thanks for your feedback!
You have some awesome ideas. I originally wanted a way to delete buildings but I wanted to spend more time on the other mechanics instead. I thought that if you didn't want them to make sound then you could just mute them.
Also, I'm not that good with audio. I noticed the flaw with sounds "stacking up" (there is probably a better term) but fixing it would mean spending time looking up how to fix it and possibly rewriting some of my scripts. Both of those take time I didn't want to spend.
I'm glad that you liked the concept. If I am ever gonna further develop this game I will make sure to take some of your suggestions into account.