One solution is to have a "Todo" page in your Trac wiki-- but I agree, Trac isn't a great way to manage long-term planning and short-term todos. I use Redmine

One solution is to have a "Todo" page in your Trac wiki-- but I agree, Trac isn't a great way to manage long-term planning and short-term todos. I use Redmine (redmine.org). It's got a great wiki and decent issue tracker. It also has forums, an internal blog, and a few other goodies. May be overkill if you have to switch your whole project over. Basecamp has a free plan. The very small link on this page: basecamphq.com/signup. $49/mo is a fairly large commitment for to-do list and idea board, but you might be able to get by on the single-project free plan for a while.