SharePoint Fx Client Side WebPart with audience targeting?

Hi Danny,

At the moment, I'm afraid, audience targeting is on the shoulders of a developer, who can add Target Audience group picker property (custom one for sure) and code for it hiding/showing the web part. Sounds awful? Maybe, but SPFx is a preview or even a proven vision, so it's a question of time and a list of helpers which will be added in future.

Target Audience mimic could be done even now with some additional affords.

The toolchain used in SPFx can be applied for CEWPs on steroid development as well. This approach is applicable for development process when the source control (git) is used and tasks automation advantages. 

From this side, SPFx can stimulate migrating to the way of creating web applications in a bit more robust and reusable way as before.