Well this sounds interesting and part of me is very tempted. The other more rational part is saying 'no, you've already got over 30 WIP's that you're trying (not very successfully) to get rid of, and you've got another few pieces that you're supposed to be starting'.
Of course I could start my count of 15 with those pieces. But really - I should be sensible, shouldn't I?
The other problem with the idea is that I'm never very good at playing by the rules. I don't do well with goals. I'm sort of surprised that I've managed to keep up with stitching even just a few stitches every week on my/a UFO project for more than two years now (note, however that this has not produced any finishes of said UFO's).
And really, if you were going to do this challenge, shouldn't it be starting a new project for every day in January?
I guess I could start loads and then put them away in a bag or box like most of the rest of my WIP's and only work on one or two. Seems a bit pointless though. And I'd have to buy more project bags.
So have I talked myself in or out? Well, I think whichever I think now, come January it'll be a bad case of not having a round tuit, and not getting one either. So perhaps knowing that I'm safe in making up all the rules for myself that I want and dreaming dreams.
Maybe also I have an ulterior motive in posting this - maybe I really want to sucker in all you other people out there who have bigger eyes than needles (or whatever the stitchy equivalent of that phrase is) so that you can all join me in my indecision, or just join the challenge. :)