Wow, what a bunch of unhelpful comments.
First, if it wasn't for Eddie recommending boot-repair, "broken beyond repair" in fact was the very fitting term.
Second, have you maybe considered that I've already read the home page of rEFInd and came to the same conclusion? Besides the fact that the page is virtually unreadable - both from a visual and a content point of view - I have yet to find anything indicating what it is actually capable of and what not. Because as far as I can tell, it should be able to do what I want it to do.
So please, if you don't have anything to add other than snarky remarks, just don't answer.