I understand your wish to terminate this. If you consider that all of this was in vain, then go ahead, eliminate the thread. Bear in mind several things, though:
You have inspired quite an amount of people (complete strangers you have no clue how they look like in real life, nor really had the chance to have nice chat, or a beer with them) with your original setting and no doubt, the story would be even more impressive should it be played through 'till to the end. Even if those people left early on or without notice, you still left quite an imprint on them, since you managed to muster up a handful of players to join in and participate and help write your world. Each with their own vision, skill, experience and writing ability helped to form what GEAR is. Remember, you are working with people, individuals that have their own lives, their own perspectives, visions, ambitions and passions different from one to another, but share these three peculiar interests: roleplaying, anthropomorphic characters and fictive armed robots; of course it is hard to bring together people and keep them engaged in something that, whether you like it or not, may turn into something they didn't like anymore. I for one have considered leaving a few times during my stay, but I pulled through for the sake of the good feeling I would experience after I'd finish one of my gargantuan posts, read it through and see how people react to it and use it to shape their own actions and progress through the story. That is what I find most fascinating about roleplaying with a good group: the ability to adapt, change and write something that ties in together other people's texts while adding their own.
The guild has been extremely unstable during the holidays, people were absent through the holidays too. Everything has its dead times, nothing ever steamrolls without a few hiccups on the road. But, maybe, not everyone has been completely MIA. I've checked daily for any updates, anything new on the IC or OOC. I couldn't possibly reply at the time as I'd have nothing to complete at the moment since I've pretty much conditioned myself to react to both Esailia and HopelessIncubus; maybe there are other people around that check every now and then and I have to congratulate Esailia for being perseverant enough to write a post, even if it is three weeks after the last IC post. It is still a confirmation that someone is still interested and wishes to participate in your world. About the rest, I am not sure, but it is safe to assume that both me and Es are solidly standing our ground and wish to continue, if you also want that.
Think about yourself too. What is the real reason it became a chore? Is it just the external factors? Isn't it also something that comes from within? No, writer's block is not real, it is a myth, a prettier way to say "I'm bored", or "I'm thinking really hard, I may come up with something later". You've rebooted GEARs several times already, was it always the same fault? Were the people involved to blame, was it the hosting site? Like Es suggested, a change is needed to keep people engaged. For people like Es and myself, it is easy to stay connected since we pretty much chose rather weird characters and roles: Es controls not a singular character, but a fire team, which brings a very dynamic aspect on her side of things, while I chose to be a pilot corpsman, a hybrid unit that is constantly on the run to either take lives or save them. Giving everyone the same GEAR? Definitely not. Having a more restricted selection from which other players can choose their own model? Sounds like a better idea, as being too rigid will drive people away. As for those who write CSs and never show up, I recommend making a background check on those people before accepting them in the team, see if they're sudden leavers. At least, you are nice enough to announce the possibility of aborting this roleplay.
You could always write this story on your own, of course, but it is clear that sharing it with an interactive group of strangers sounds more appealing to you than to do everything solo. I am also considering to write a book of my own, yet, I share a bit of it with a good friend of mine to help me with playing as the protagonist of the story so he could give me the chance to learn how to write a character completely different from my style of writing; the process is extremely tedious, me and him both agree, but so far, we are very pleased with the results, even if it is still a very choppy, early draft.
In the end, it is completely up to you what you want to do with it. I don't talk much through the OOC as I always find myself placing stupid posts in the most awkward of times, trying to fit in other people's conversation or trying to keep up with an inside joke so hard that I murder it (the bad way), but I felt like I wanted to share my thoughts here in the open. They may be rambly and lack a logical structure, but English is not my first language and I am also already exhausted, two days into this week. I cared enough to participate, write in my free time and enjoy my stay here, even if I too brought some unpleasant moments for being too late with my posting schedule; with all that, I stood by and like I stated months ago, I will stand until this thread will reach its end. My post will be finished tomorrow night.