From Reddit: NO level sync when entering a dungeon with less that required players!

[Shougun]

Cool!

They may want to consider bumping the adventurer in need bonus or adding a "in need roulette" depending on how this changes the pool, but still - I like.

Edit:
Read the reddit, apparently there will be some fairly large condensing of roulette, wonder how new players will be able to approach the roulette then. Reason why I said in need vs just combining everything. We'll see :P

Also there was dev mulings on a possible NPC helper system for some low content, maybe that is their solution (wasn't a "confirmed" feature last I recall).