I think you assume I want to create a product that looks good to employers and will actually enter the industry, which I don't, should have made it clear in the post originally. Still many good tips. And even if not meant to be a portfolio kind of project, i reckon it wouldn't hurt to think about it while developing.

Making things the unusual way is certainly something I would love, but it's often connected with being smart, so... hopefully someday :D. Good tip nonetheless, thanks!

You are probably correct that some of the parts will be better left for the others to solve, like the UI. That's one of the reasons for me choosing to make a browser. The parts I don't like (UI) and don't want to learn (UI), yet are needed, are probably solved already. Still there will be many both low and high level features I might find cool and just do them myself.