Imagine a skyscraper with ladder/scaffolds/water as your lift and every floor is a bedroom for each friend you have.Also,build extra floor as a smelting/brewing/resource storage floor
Pros:Looks kinda cool and creative as a primary base
Cons:Ladder takes a long time to climb so if you want ti go down make sure you put water at the bottom of the lift so that you can just jump down safely.Also the skyscraper will take a lot of resources and time to build