Sadly Kojima's art-style, for the past few games, suffers from scale inadequacy. I'd have to say the first time I noticed it was in CoD. Hector's head is too small for his body (on the front box cover), plus you also have the infamous scissor-legs Trevor Belmont. And now that zangetsu468 has pointed out~Yoko's head to body ratio. There should have been another artist there to proof-check her sketches before they were finalized. Kinda like how IGA should have had another writer on board to help proof-check his stories before they were finalized to help greatly lessen the plotholes.
Goddamn, I agree entirely.
Kojima's art is great and detailed, and defines her era of the series, but seriously started losing all sense of bodily proportions as she went on (even though some of Symphony's art also suffers from it, like Alucard's MONDO giant hand on the cover art). I think Lament of Innocence is kind of her sweet spot as far as art goes.
And IGA really did lose his touch with storywriting later. Let's not forget Dawn and Portrait's incredibly wooden story and writing, and the fact that his final game in the series, Harmony of Despair, didn't even bother with one really and was just a bunch of randomly recycled crap that catered to the lowest common gameplay denominator and had none of the fire of his earlier works (although how much of that can be directly said to be his fault is debatable). The prog-rock covers of Castlevania staple music was pretty good though.
We talk on and on, waxing nostalgic about the good old days when IGA, Yamane, and Kojima were the heart and soul of the series, but we've got some seriously rose-colored glasses on when we do.
Ecclesia aside, a lot of their final works were derivative and paint by numbers and tended to underperform. We, the fans, eviscerated many of his later games for not meeting prior standards ourselves (and were often harsher than we probably should have been).
Looking back, there's a clear reason his Alucard game was passed up in favor of Lords' fresh new take.