I made a "bridge building" above the beacon and then destroyed the beacon so i guess that bridge buildings are a bit glitchy because i found some other issues caused by them
click on the happiness icon and it will likely tell you that you need arcades, pubs and restaurants more nature, nightclubs and art. Food is not the only happiness factor.
1 word, teleporters, fastest way to get around, it helps save time for your people so they don't have to walk longer distances and so it helps in efficiency so you can get your crops grown and harvested faster.