I'd like a check box that you can tick for a speedrun in DF.
I'd definitely opt for a more relaxed run most of the time, because a fast run depends on people knowing what they are doing and working together as a group. DF often throws people together who simply can't do a speedrun smoothly.
Apart from that, it's also nice to have time to say something more than, 'Hi' and 'ty' to the group and to have time to open the loot chests, too.