Maybe, but at least with skyblock we'll get a small area where people are forced to interact.I'd be up for that, although I've never played a non modded skyblock before.
I still think you'll get the same problem though; a relative hive of activity for the first couple of weeks or so, followed by weeks of logging on to the server without seeing another living soul!
I think we just don't have the volume of players to keep it active, which is a shame. The closest we had was back in the second(?) reset of the server back in 1.2.1 where we had a proper little town with community buildings and a fair few regular players.
I think we'll get new players too.