I started in the Peach Princess days - more than 15 years ago. The biggest difference for me has been quantity. Good years for me at the beginning had three visual novels released in English that I wanted to play. There have been several WEEKS this year when three visual novels were released in English that I wanted to play. I didn't have a backlog at all until a few years ago. Now I have more than ten purchased visual novels that I haven't played yet. Just when I think I'll start catching up, there will be a big release week or something I didn't even know I wanted will get released and look so good that I have to play it immediately. I used to be much more forgiving with what I played. The visual novel could have some very obvious flaws. It could be in genres that I didn't like very much. But I played a wide variety and was sometimes positively surprised how much I liked something that I wasn't expecting to like as much. Now if a visual novel isn't one of my favorite genres, or it has a single obvious flaw, it *might* make my backlog. If I generally don't like that particular genre at all or it has multiple obvious flaws, I ignore it and don't even think about it again. There are too many good ones to even consider ones that I don't think I'll like.
Beyond that, art has become much more important to me. I look back at the art of some of the early games I liked and I wouldn't ever think of playing them now because of the art. Developer loyalty has become more important to me. If I like a visual novel by a particular developer, I'll buy their next visual novel. If I like two visual novels by a particular developer, I'll pre-order their releases or buy them day one.
One thing that has stayed the same is that I do go through phases where I prefer playing certain types of games. Visual novels, RPGs, strategy games, etc. So there are times when I haven't played a visual novel for a little bit, but then I go back to playing them for months in a row.