this modpack is good and make you play alot of houres 
plus the Dev on it keep it going and made a vertion 4 witch i haven tryed yet becaus Vertion 3 have a lot of playing in it
annndt if you whant som Info about it https://www.curseforge.com/minecraft/modpacks/skyopolis-3
Sky 4 just Came Out 4 Days ago
https://www.curseforge.com/minecraft/modpacks/skyopolis-4