I'm actually not trying to say IGA killed the series, so I apologize if I'm coming across that way. I do appreciate what IGA has done for the series, whether it be Symphony of the Night, producing the string of games that he did, or just keeping it alive long enough for it to actually be handed off to another developer. I mean, I did play every game from HoD to, well, HoD. I wouldn't have kept playing if I hated his games.
What I was trying to say is why he's not coming back, at least any time soon, from a business standpoint.
Konami is obviously trying to turn Castlevania into a blockbuster, perhaps with the goal of reviving the IP into something that can rival MGS, and for one reason or another, Castlevania's fanbase has dwindled from IGA's high point at the beginning of his tenure as Mr. Castlevania to its low point at Judgement/HoD. That's going to matter in Konami's eyes, regardless of any sense of holding the series's "spirit" or being consistent. With their obviously lofty goals, why would Konami invest more money into IGA to create another game when he has succeeded only to keep the series alive, rather than turn it into something more profitable?
Saying that sciv was the high point of recognition for the series while IGA killed it leaves a huge 10 year gap between that title's release and when IGA took over as producer of the series. You're exonerating quite a few producers in the meantime, as well as the KCEN/KCEK titles.
I use SCIV as my example because it was the last big release Castlevania game before Symphony of the Night. Belmont's Revenge was a portable title, Rondo and Bloodlines were attempts to spread the audience outside of its core base, and the X68000 title was on the X68000. With Symphony of the Night, IGA created a game that eventually reached megahit status and was never able to recover that popularity after Circle of the Moon.
Again, I didn't mean to imply that the series had never seen issues before IGA came to the forefront, only that IGA's success was ultimately in a steady decline after his breakout game, and that's why he will probably never see himself at the head of a high budget Castlevania title again (which is if he even wants to).