What went wrong with the update? Maybe it's actually a perfect time because maybe you can figure out why it was a "dud" and fix it :). Assuming your an engineer.
I really like this idea, to be honest. I think that ianpri makes some solid points but then again, it seems like this project isn't supposed to have those features.
I like that it does not require a login but a suggestion: have the user create a username for themselves that could tie them to the list. This would still make it so that nobody has to login, but yet you would be able to see who completed a certain task. Just an idea.
All in all I think it looks really nice, and I enjoyed the functionality and ease of making a list and letting others contribute to it. It literally takes a few seconds from landing on the site to have a functional list I can then send off to teammates.