I adored season 3... season 4 well not so much, I tend to skip almost all of it.
Ok, I'll say it. I HATED season 4.
The storyline seemed less about testing Vlad's and making him grow into the man and leader that he needed to be and more about crushing his soul.
They shouldn't have killed Sethius SO easily in season 3. It was the PEREFCT setup for a new villain!
They should have had him escape and rally forces to start vampire war. Then all of the prophecy about Vlad would have been true!
Vlad really would have been a great vampire general and he really would have led a vampire army! All the really evil vampires, like Ramanga and his evil Adze, would have followed Sethius and been killed. Other vampires would see how powerful Vlad is and respected him more. Erin would have had a chance to show off her butt-kicking combat skills. I bet she has some mad skills with an argentilium blade... The fights, the subterfuge, the vampire politics and war....it could have been epic!
And at the end, Vlad could have been trapped and injured and had no choice but to feed on Erin (human blood) in order to make them both survive! (I have an image in mind, like the scene at the end of BLADE when he bites Karen) Vlad races off to defeat Sethius and save both vampire and human races from annihilation...cut to Erin laying on the stone floor...and her eyes snap open and glow red. Oooo, I've got chills!