We have MS Sharepoint -- which isn't all bad for managing a task list. The data's publicly available, people are notified of changes and assignments.
I think that Bugzilla might be a little easier for management and reporting purposes. While there are some nice Open Source Scrum management tools, I've used up a lot of my political capital and can't ask for too much more than what we've got now. Money isn't the object -- obviously -- it's the idea that my team has too many specialized tools.
Will Bugzilla work out as a more general project management tool -- outside the bug fix use cases?
Will I be bitterly disappointed and wish I'd downloaded something else and made my case for a better project management tool?
Bugzilla Is a great bug tracking system. We have tried to use it for other project management tasks and the results are less then stellar. I would recommend finding something designed with your goals in mind.