at level 30 you've probably only got the brand newbie Astrub players you start with or meet and maybe a few other people you find lying around, and the amount of level appropriate areas in the game are staggering, trying to explore them will make the game feel absolutely empty. The only place where new and old players meet is Astrub temple, nation markets are dead. There are no mixed leveling areas like there were with Wilds or Poulters, so there is no place for new players to gather and find lots of people... The game has gotten to big for it's own population.
I spent a long time thinking that low level content would help, it didn't. I do think that scaling drop rates at low lvls would help. You should be able to finish a full set for a lvl 30 dungeon in 5runs or less. All in all, I think there are more core gameplay problems at work than just levels 1-100. Even if you removed all the post level 100 content there's still a half dozen islands, 4 nations each containing 7+ areas and the mines and there's just not enough players to flesh out so much land space and not enough draw in any one area to bring players together to find meaningful content for all levels.