Some brainstorm here: With all the different characters, I think it is okay here to pursue some individual story lines, which at least is what I am doing, though I fully intend to have my individual story lines intersect with others (otherwise I'm writing a personal story). For example, like with Golt being tied to Vayne's background, and of course Iyana though she's regrouping for a bit. The reactor group is on its way, there are certain characters designated for actions already, and the Medusa is clearly on a mission. But if anyone wants to go on with something I'd say tie it in and do it. I've had a lot of fun reading Cknarf's sidestory here, and Maj0nese bit that ties into his background.
And if I am writing too much, let me know 
Oh, and a quick edit to say that the characters I add are diverse in their beliefs (and do not necessarily represent those of the author, because mah guudness how could they all!), diverse in their pursuits, however, are all meant to tie in eventually. Some may last and some may not but I don't want to predetermine their destinies. I figure a lot of how they end up depends on all of you and how you decide to deal with them.