If we think about it, it definitely is a nice idea, because players will have more activities to do while they are staying in the lobby, which is always nice.
But on the other hand, there are plenty of reasons to say no.
First reason:Since it was removed, because it was buggy, then it would require some development time to get fixed, which may be not worth it, considering that not many players have played, which means that they haven't really liked the game all that much.
Second reason:Lobby games are unpopular in general
How often you see players playing them?
If you play everyday, then your answer might be ,,very rarely", or,,almost never" which is the case.
Bringing back something, that's not going to get enough attention by the players is a waste of time, and recourses.
Third reason:There are already a plenty of things to do.
Whether you just like to explore and search for the hidden chest, or hunting the beachballs you probably don't spend your whole time playing only in the lobby.
Plus, there is the lobby parkour, that also is a lobby feature, as well as the vortex jump.
In my opinion, there are just way too many things that are more important than lobby games, not because they are bad, but because gamodes like Skyblock and Eggwars are more important than everything right now, which is completely understandable.
Don't get me wrong, I really would like to try this lobby game, but there are other priorities that are more important.
