Hey Kamikaze!
The point of Spartan Camp is to encourage gesture drawing and regular practice. Many of my pieces are two minute sketches. Some are five minute studies or longer. I occasionally draw sketches under a minute long, but like you said, they're low quality. (So, more practice is good.)
If you want to join and put in a day's worth of fifty sketches, I'd be thrilled. If you'd like to submit a week's worth of quick drawings, I'd also be thrilled. If you want to mix and match, or put in only five longer, more emotive figures, we'll happily accept that, too. (I've just been limiting the 'featured' category to 50+).
The group's been a bit slow since I got a new programming job a few weeks ago, and now I'm in the middle of a writing marathon, but it'll come back in December.
Happy drawing!