Yeah I think that explaining WHY Drac is attacking Wallachia was quite important. The love of his life, likely the first woman in centuries who wasn't repulsed by him, was killed by an idiot who thought her to be a witch simply because she practiced science. This also explains Alucard's presence, and why he'd want to stop his father (I mean we already knew that basically but it's nice to include that in it). This season was more of a fleshing out of the backstory and, if game progression were to be applied here, following the first few blocks (even though Sypha and Alucard are on different blocks in CV3 but whatev). We still haven't seen Grant, after all.