I'm partial to "MacFrye" and "Granarchy in the UK," with an honorable mention to "The Cookieville Cuckoos" because I think the orphanarium is an underutilized setting/plot device beyond the original run (not entirely sold on the alien parasite angle, but "Leela volunteers at her old stomping grounds and hijinks ensue" on its own seems promising).
Glad you like, Gorky! McFrye is definitely going to take a while to do, as it's a pretty big play. So far the only part I've written is the opening, where McFrye and Bendquo meet the three witches. I'm still figuring out whose going to be who, and how to make it science-fictiony, or if I should do that. I can see I'm going to have sell you on the alien parasite in the Cookieville Cuckoos, but I'm writing it as a parody of John Wydnham's Midwich Cuckoos/Village of the Damned, so the alien parasite is integral to the premise. Granarchy in the UK is turning out to be one of my favourites to write, I've figured out the beginning and the ending, and I'm having a lot of fun with Mom's rival.
A Planetary Bromance
I, Roommate was good. This premise is a more direct followup than any existing episode, I think.
Catastrophe! The Mewsical
I never really liked the first Thuban episode, but it's a logical place to take an established part of the universe.
Death by Chocolate (or Murder on the Trans Atlantic Express)
It could work in the Lew Morton style, I think. His are very high on my list of funniest episodes of all time.
In Other Words
Maybe? I think some greater purpose would be needed, universe/time/etc jumping has been done. It makes me think of the Nibblonian storyline, though I don't think time-jumping is already in that one.
Yeah, I think I am hitting a lot of similar beats with I.Roomate, so I guess it could work as an unofficial sequel. It's the one I've made the most progress in. It's more an introductory piece to everything else, so I would only post it along with another finished ep or two when I'm done, as I think people will think it's the least interesting overall, and I want it for people to read it, then carry on with one of the more...Futuramy concept episodes. I'm annoyed because I came up with a much better title but forgot it.
I liked the first Thuban episode, but I can see why others don't. I think the overall concept of the Thubans has a lot of potential, so this is why I want to do a Thuban trilogy of sorts. I won't be making any Lolcats I can Haz Cheeseburger jokes though.
In Other Words is going to be the finale, so while I have a general idea, it's going to build off themes and character arcs I'm going to establish and build up with the other episodes It's going to be similar to the Farnsworth Parabox in exploring parallel puniverses, but it's going to be Fry jumping into the bodies of his otherworld counterparts and inhabiting the universes they live in. I have to keep an eye out though, as the upcoming Otherwise episode seems to be another episode exploring parrelel universes, and I don't want my episode to be too similar.