One of the reasons I stopped making client apps for corporate platforms is because "filling in the gaps" of someone else's platform usually resolves itself poorly. Either the platform holder fills in the gap, they decide the gap goes against their corporate interests, or the gap is itself meaningless and nobody wants a fix for it.

For any young devs out there making a client app for some corpo's API, I strongly recommend not doing that, except for fun projects or things that get you headlines.