We do not show roadmaps at the present time. Any information related to changes on the product will be shown in blogs, or indeed in release notes. However I do have comments on some of those
This is already possible. You can manually add badges from the admin CP. Go to any member, and on the badges section, click on manage
Other than the method above for admin, this is not Something in which is likely ever to be added, as it simply goes against the intention of the system
This is already available. If you go to any users profile, you will see badges at the top in the "Your achievements" section. You can also click into that which will give you a full list and count