While we have project management tools already in place (jira) and I don't forsee us changing anytime soon, this is a really cool idea. I see a hubot hipchat script implementation in our near future... because though it would be cool to have such chat-like functionality in the management system, it would be even better if it integrated with where we already did our chatting.

That might be something you also want to consider offering in your solution, as an additional method of accomplishing the same thing.