I, to this day (along with miachelis) hate the fact that qc wasn't an actual sp quake 1 themed game. They have done some nice levels in qc, that i can imagine could fit in a quake game give all its gothic theme and whatnot. Hell, they even made a AAA-scrag monster (lol) for the blood covenant map.
I reaaaally wanted a Q1 style game again, but sadly, that was wasn't the case.
Still, i dont hate by any means quake champions, as it's a fun (but very bugged) game. I came around the weapon sound design which i hated at first, but then started to appreciate.
So, i can understand the feeling of disappointment and some kind of anger for the lack of a quake 1 real sequel. Perhaps one day...
