It's temping here as a team lead to go through and prioritize what you think is important and hand it out to the team. I'm not saying this is wrong, but one thing that I always try to put on the list is "do what you wanna".
Do what you wanna means everyone on the team gets to pick what they want to do, at least with some of their time. Sometimes someone will pick something I think is minor at best (making a script log a ticket correctly, for example), but that's okay. Maybe I was wrong and it's a good win. Maybe it's just something that the engineer really thought he could do. Maybe it was an excuse to learn a new language or technique.
The point is that there's no need to micromanage everything. Ask for the really important stuff, but don't sweat everything else. There will always be more work. There will always be more time (eventually). Give your engineers some freedom, and make "do what you wanna" a task just like everything else.