Hey there,
again the breadcrumbs - I was investigating that again and again (also the mockups by @madsrh) … now I like to hear your opinion. The fonts should be like they are now on the theme. I also tried to narrow these down in the sense of feasibility.
First the breadcrumbs as a visual element:
We had that kind before, good thing about it is, that it is visually separated from other elements which is especially good for non pro’s. The backgrounds are static - no visual change on hover or click, even on the little arrows. Only the orange line and a grey hover line for feedback. Fonts get bolder/less transparent on click and the little arrows also get less transparent when clickable. This is a kind of compromise for me but also maybe one of the ways to make it an element - like the address bar in browsers.
Next the loos ones:
We also had that one, the second is just with a separator like @madsrh got it in the mockups. This is like other distributions makes it, but it is definitely less starter friendly but fits the design more.
Last, like we have it now, but with a shorter and dark underline:
This is building more an element out of it, the dark line is not as much present as the bright one in the actual theme. I would prefer the dark line. I hope the shorter line is possible.
Tell me what you think!
So much about breadcrumbs, it will come even more 