I’m not joining any games until late this month now, but I would like to try out a 16 hour limit, so I’ll take you up on your offer when I get back from vacation. Hopefully if that goes well you’ll consider adding it to the drop-down. I wasn’t entirely serious about 13 and 17, but I was trying to make the point that having a drop down at all limited options, for no benefit I could see. I suppose not being surprising could be that reason =)
I agree with @daniel_langdon 's point though – ideally turns won’t reach their limits. The point of a 16 hour turn limit would be for folks who intend to play two turns a day, but want some more breathing room. I feel like 24 hours is too long – particularly since we don’t have this option: Submit last, submit twice (was: Force ‘next turn’ in admin controls) , but, 12 hours feels too short. So I feel like I’m stuck between too quick and too slow.
On the subject of a turn limit possibly being surprising – I’d say whether a game is turn based or real time, and what the turn structure is, is (or if it’s double/quad speed for real time), is the very most important information about a game. The other options can influence the strategy within the game, and everyone will have their preferences, but the game timing seems to be the only setting which is relevant to the question “is it possible for me to play this game?”
Therefore I suggest it would be worth it to have that specific information: an icon for turn based vs real time, then either a 1/2/4x next to the real time, and just two numbers for the turn based, eg: 24/8 for 24 hour turn limit and 8 hour jumps. Then folks can just scan through games they can play.