Hub worlds are defined by size and accessibility. The current main spawn although nice, in my opinion is to massive. When new joins enter, they see a huge barren area with 4 different paths and no idea where to go to get out of spawn (personally not to mention that the help/tutorial is a bit out of place). That plus with the amount of space used, it makes the server feel more empty.
Personally, I would suggest that a new spawn might be in order. One that is more constrained but maybe something that looks naturally built within a terrain and shows easy access out of spawn. Another thing is maybe for new joins make the initial spawn somewhere where it gives them the option to see a quick breakdown of commands/rules and tips. If they choose not to, then they just automatically go to the main hub. For that spawning point however, make it on the outskirts near the entrance to the wild and then let the players choose to either head into the town, or go right into the wild (with of course the general rules and whatnot nearby)
Personally, I would suggest that a new spawn might be in order. One that is more constrained but maybe something that looks naturally built within a terrain and shows easy access out of spawn. Another thing is maybe for new joins make the initial spawn somewhere where it gives them the option to see a quick breakdown of commands/rules and tips. If they choose not to, then they just automatically go to the main hub. For that spawning point however, make it on the outskirts near the entrance to the wild and then let the players choose to either head into the town, or go right into the wild (with of course the general rules and whatnot nearby)