Ayami's artwork is fine. I love how the general mood towards IGA changes every time a new game comes out. I have a blast with any Castlevania game he's made because I don't nitpick the hell out of them. Just face it: Castlevania is a goofy game series. Sure there are some serious moments, but for the most part, they are crazy. I sometimes wonder if we are all playing the same game series!
Anyway, just give me a new IGAvania and I'll be happy.
The perception of IGA is shifting because the confusion surrounding him is so deep. A lot of people deem him responsible for SotN still.
I'm not sure I agree that CV is a goofy game series. I agree that IGA *turned* it into a goofy game series, for the better or the worse. In terms of atmosphere and storyline he did fundamentally two things: he took the goofy looks of the 8/16 bit era (that were probably rooted more in the consoles technical limitations than an actual artistic direction) and made it the canon of the series. He also took the "experimental" approach of Rondo and made CV a full fledged anime game (a dream he only fully realized with the Sorrow games and Judgement).
I think it's easy to see why the fanbase is so polarized about him. For one thing, CV is a fairly "stale" series. It's a good thing in many ways - we like that playstyle, and almost no other game delivers it, and basically no other game delivers it as well as CV does. It's also a playstyle that benefits from every minor upgrade - just look at how few differences Ecclesia introduced and how different it still felt - so for fans it's a more than appreciable situation. We like those games and we keep getting them.
On the other hand, we are constantly aware that we could get much better games. It's not just technical issues, even if seeing the series try to spearhead the 2D technology survivors instead of merely jogging along would be great. The saga rarely sees drastical improvements, and it's rarely evolving - every game is fundamentally the same with a new gimmic tacked on, and such gimmick is discarded in the next game. It's a formula that has little hope of ever growing. On the other hand, it looks like ALL the bad design decisions instead are there to stay, so we're permanently stuck with prehistorical level design and inconsistent design decision like the faulty level up system that removes all challenges from a saga that was historically known for being "hard"; and so on. It would be unfair to fault IGA for all this - expecially since despite all this the saga remained on very good quality levels on almost all installments - but to me the feeling I get when playing a CV is constantly that of not getting the great game I could be playing. The most memorable exception is OoE, but OoE is sort of like LoS - a game with ten thousands layers of awesome that almost make it look like another saga. I'd want something revolutionary yet familiar. LoS is possibly moving in the right direction, but it needs to iron a few things. Story is the first - it can't live on the premise that the story of the other games "suck". We want to be captivated, and LoS was too lightweight on lore and more importantly character building. I said it elsewhere - now we need a cast, recurring villains, legends. Something to fantasize about between a game and the other. A legacy.
But returning to IGA, I think the first reason we're polarized about him is his handling of the CV "lore". Like someone said, it's a goofy saga by now. It's become 3 parts Bleach 4 parts Pokemon with a slice of Gintama and some gothic seasoning on top. I can see why someone can like it, or even love it, but CV didn't start like that. I'll be honest to admit that to me Aria was the game that almost killed the saga. I wasn't against the timeframe (as I'm not against something like the ending of LoS hints at) but to me CV is gothic dark fantasy, not a generic anime show about teenager students awakening the power of evil within themselves. It really felt like throwing away the entire legacy and saying "screw this, let's see if we can make this popular with some anime bs".
So this very long rant (sorry

) is just to say that I may be alone but while I'm still completely fine about the game part of IGA's entries, I'm firmly convinced he took the saga in a place where I don't really want to follow him. It's just too silly and juvenile now, and not what hooked me to the series in the first place. I'm one of those fans who's been clamoring for the 1999 game for years. After Aria, I don't want to see it anymore. LoS' secret ending gave me the 1999 game vibe IGA took from me, and I hope they'll eventually deliver that. But Judgement was the biggest chance to see the saga and its characters through IGA's eyes, and it definitely made me certain he's on a trail I don't want to follow.