As someone who also owns a gear S3, I can tell you that most App Store Watch Face are absolutely terrible. They are either poorly optimized ripoffs of famous designs (as you mentioned) or generally terrible original creations.
However, after you filter through the crap, you do find a few a few good faces.
On the Apple Watch, there is no reason one face can’t just be a grid of apps. The time written out in words, and complications that are location or time date influenced would be cool too.
The fact that someone owns a different watch doesn't make their subjective beliefs more valid, so not sure what the relevance of your S3 ownership is.