My comment was basically to underscore the fact that Facer is doing something similar today.
Anyone who has the Facer app directly on the watch like "samuelf" or myself - mine is a Moto 360 paired with an Iphone- should be getting new random watch faces as part of their "Daily Mix" push .....
I do not have the Facer app on the phone obviously.....
So in essence there is a simple way to push watchfaces directly to the watch WITHOUT going thru the phone app...the functionality exists today.
Thus if Facer would make that same functionality available thru a command push - where you can save lets say the a bundle of "10" watchfaces in the Facer.io Web account and deploy that - logically it should show up on the watch directly.
anyway thats my 2.0