I liked the old way the Mcmmo worked, the spawn, the old VIP shop was good but I don't really mind about that I liked how the old pvp worked to. I just feel as it was so much better then what it is now although I don't play it as much as years back If you were maybe to implement or even just do a test server for sglacier for like a week and see if it attracts the old or even new players back.
Although like I said If people enjoy this skyblock then just keep it that way cause I mean it is your server.