I'd give an answer, but cheap romcom and harem stuff from back then was my gateway to anime, so I'll be unjustly positive when talking about them. Trashy pop OPs that I listened to so much that I hate all of them now. Less Rito clones. Dense MCs weren't annoyingly overdone yet. There were a lot of multi-MC shows too, which was nice, because all the male leads had to be developed enough to be different.
They are the kind of shows that were average at the time but seem slightly better now, despite the rough animation that a lot of shows had back then... That was a rough transition.