Or when Dax went after the Albino with her Klingon friends because of a blood oath from a past life.
They also forgot the Odan character from TNG that wanted to get right back into a relationship with Beverly as soon as his new host arrived.
There was some goofy stuff they added about the Trills. Like that episode with the silly ritual to bring back the personalities of the past hosts-- complete with ancient sounding chanting and all. Silly.
In many ways Trills were just another example of the forehead alien, and pretty boring, but Dax made it interesting, though she could be over the top at times.