Doesn't it sound great to have bitcoin talk mobile app to access the forum any time on the go. May be while you are travelling or not in the mood of going PC.
Adding and improving things with time will give new height to the forum?
I like how the web browsing of this forum and I may not use the app, although if one is created I will first try it and see out it is. I do not think we need an app to be accessing this forum though.
If you think there is a need for it, you can create the app yourself which would be a good project.