Ah, the collars. Yes, yes, yes... so.... the collars.
When it comes to "nice to see" stuff I follow coherency and straightforwardness.
And you did great...
When it comes to add parts for the sake of it (or almost) I go Henry Ford on it.
"Every piece you put will break" or something like that.
So you either put something really simple that can't get stuck, it's cheap to replace but doesn't look too cheap and serves a proper function... go for it.
If you just think "I could totally put something there!" then my- and it's my humble opinion here!- suggestion is don't