-Have parkour in your town
-Have an arena/terrarium
-have a grinder for multiple types of mobs
-have a viewpoint tower that gives a view of your town
-have a giant casino building made of glass, and another block of your choice
-have buildings with shops in them, and a mall
-have a town map
-give free plots, but make some plots that cost money
-make a party room that only residents can enter
-have a museum of some sort (like a head museum)
-have an art gallery
-have a castle that you live in
-have a big, modern tower where you spawn, with rules in it
-lastly, have a farm open to allies only
This should Help. You will get a lot of residents, I promise!