The only thing that might need to be improved is that Borg interior shot, where we pull back to see more of the hive. All it should really take is a small color correction though, to better blend together the set and painting.
But yeah, the actual Borg model and other effects in that episode hold up a lot better than I remembered.
Yeah, little touches like that would make all the difference. When I think back on it, Q-Who was actually the very first episode of TNG that I ever saw. I grew up in the country where we only had two channels available to us. Neither channel carried TNG. My friend a half hour away did get a station that carried it and he recorded a few episodes for me. Q-Who being the first.
I fell in love with the show immediately.