I think the complication right now is that most everyone wants to go find Alias, which means most people want to group into the same group, which is whichever one is going to find him.
But we don't really need to separate the goals of sealing the keyholes and finding Alias. If we say that the pathways being covered in darkness means there is no telling even how to get to the worlds they want to (Anastasia's World, and ultimately Olympus), then the idea would be that whatever groups are going where, everyone is simultaneously contributing to finding Alias AND sealing the keyholes. Which would also mean that nobody has to pick one certain group because 'This is the Alias hunting group', because they both have that goal.
Which I say both because I feel like we should stick to a couple groups. As it stands, anywhere Hoshi goes, Leon and Launchpad will go, anywhere Morgan goes Daisy and Max will go, and anywhere Lucian goes Donald and Goofy will go. I don't necessarily want Morgan to just be sitting around in the void waiting for everyone else to finish the worlds. So really the groups can be made up by what people want, and then Morgan will just go with whoever.
Really it comes up to what worlds are available to go to next, and how far away actually is Alias. I imagine we won't be catching up to him until near the end of KH1.
Also how many worlds do we want there to be in total before we reach the end of KH1? The final worlds being as mentioned in the past, a brief stop in Camelot, and then off to Hollow Bastion.
And I mean, I'm sure once everyone is reunited with Alias everything will go back to normal anyway and it'll be smooth sailing from then on.
