You can join a team after July 15, if they have open positions. You cannot leave a team unless you are leaving HiH. Currently, there is only one open spot on one team. I don't like this, because new members will not have a way to join at all. Only one more member can join a team at all. (See hh_ordermod for current team listings).
For that reason, I am making a new team. We need more open spots. Comment to me here, there, anywhere to join the team, and please indicate whether you would be willing to captain or co-captain it.
All the tasks have been submitted, and I'm very excited about them! I think the number and difficulty is about right. If you meant to submit one and haven't yet, though, I'll still accept late ones for a day or two. (We need time to proofread them, decide the order, etc.)
Super thanks to jethros_mom for being my moral support and proofreader!