For users, it would function as an exchange and this is the easiest way to communicate it. For the developers and law, it would only be similar to a messaging service although the UI would look like an exchange.
On Steem we have a unique opportunity with trust signals to empower users to exchange directly with each other which has significant popular support from our community. If those with the ability to fund the developers doing the work to create it are not interested in giving it a chance, that is fine because just talking about this may help someone get motivated to code it themselves and know where to reach out for help.
Finally with thousands of likes coming in every day on the posts and videos I create, I appreciate you helping me maintain humility in seeing that my work is no better or worse than anyone else's. Our contributions here are equally as valuable and it is more fun with each of us having the freedom to share different viewpoints.