I think as time went ahead they forgot to drag the story right way which is kind of challenging with almost every TV shows or even movie series.
Exactly. It seems most movie franchises have this problem. The further away a movie gets from the original, the more tainted and mediocre the sequels get. I don't know why it's so hard to keep up with the original characters and try to build on the original plotline.
I think killing Michael off was a horrible idea. Eve was a terrible addition and it's not because I hated her character. it's because the producers made her out of thin air and threw her into the movie with no back story at all. She just didn't work.
I frowned at the idea of how the studio executed the humans getting involved in the war. It just didn't work so it wasn't referenced at all in the later films. Some ideas can work. Which is easier said than done. But, executing an idea and making it look good takes a lot of work and effort. They didn't make it look good.
My issue with the last film was the killing off of Michael like he was a mere cockroach and giving us an antagonist who could temporary turn into vampire / lycan hybrid that could beat Selene 1 vs 1. Selene, who if I'm mistaken, was implied to be stronger than Michael in Underworld Evolution after she fed on Alexander Corvinus.
and then they ham-fisted in the Norwegian Covenant with how that covenant had ghost like powers, David is now the son of Victors fellow Elder, Amelia who had a secret affair with Thomas and they had him hidden away because they feared for his safety. I don't know why. Did Victor have something against Amelia having her own family?
It just quit making sense starting at the 4th film and ending with the 5th one.