Nothing to stop any club adding to the crest design.
City had those three stars above their crest that meant nothing
Now it's their club that means nothing.
Personally, I'm glad we haven't gone down the stars on the shirt route. The Liver Bird with LFC underneath tells people everything they need to know. We really don't need any pretentious self-aggrandisement.
I think it's fine on limited edition shirts sold in the store, but I'd rather them not be incorporated into the official club crest.