Star added to red or gold or anything is just a marketing tool hatcheries use to make the birds sound more interesting. They really are just sex linked by colour.Re food oriented chicks -- I've told others - what I've learned about chickens is -- their first drive is to eat -- their second is to not be eaten!
Blondie is on the high end for the first drive, and on the low end for the second -- if you catch my meaning !
I think you're right - the GSL. and by extension the RSL & BSL - are similarly bred for production, and reliable sexing at birth -- rather than for personality traits, or other things.
On the former thread, from which I learned TONS - I believe I read that the 'star' breeds are similar to the sex-links, if not the same?? I think it was also a corollary that the production breeds may not be as hardy, or long-lived - just in general - as the more heritage breeds (I may be using this term incorrectly). You may get more eggs, but for fewer years, and be more prone to disease??? Love being less anxious about disease & rigid diets - not into prophylactic antibiotics, but not opposed to a little neosporin for wounds -- you know common sense, non-zealous. This thread, and its predecessors are consistent with my way of life. Do what you can, then let it go.
Individual birds are always going to show individual traits of course, why I prefaced my previous comments with the disclaimer -- I'm truly inexperienced in all things chicken & wouldn't presume to know about breeds.
But I do like the Buckeyes so much I'd definitely get more - but next time, look for a reliable breeder - know there aren't many & from the Buckeye website - looks like it's easier to find them back east (Ohio -- DUH). But I'm not anticipating needing to do that soon - barring some unknown catastrophe, knock on wood.
I can have more birds - but 6 are plenty for us for eggs - & can supply by brother & daughter with eggs too. and I can still tell them apart - LOL
Now if I can only get over my BYC addiction!! - I need to get back to doing stuff around the house instead of trying to keep up with threads!
They do have higher chances at reproductive issues and what not. I do not supply additional lighting, so my second year RSL is not laying right now. I only have one who is over 2. The rest are all just starting to lay. I call them all my Pennies. I do plan on processing them when they are spent, but I'll give them a couple of years of laying. The original Penny laid through her first winter. Her personality stands out amongst all 140 of my birds. She is everyone's favourite. Visitors. Family. Everyone loves Penny!

I don't think they are any more prone to disease, but they are to reproductive issues like internal laying, ovarian cancer, and egg binding.