I understand your point, however Konami had been doing that before Cvs name became almost nothing. Konami released lots of Cv before, because, If you remember oh-so-eldery one, CV was such a big name in the 90's, and we're talking about Mario-level big, or a bigger-than-final-fantasy big. Then SOTN became a cult classic and sold well, it also sold well in XBLA though... however, if IGA's words are to be believed, HOD sales were good, AOS sales not as good, DOS sales.... even worse. DXC was almost a flop selling 70.000 if Vgcharts is to be believed, then POR was kinda meh but with an increase due to strong marketing, OOE had a slow start however it sold well not too long ago thanks to a extremely discounted price ($10 I think?). 3D vanias are not different, LOI had decent sales, but COD was a flop thanks to being released in the same month than xbox360 (WTF?) and if I'm not wrong, also FFXII and a lot of heavy sequels, games that had actually, you know, big names?... Then Judgment... flopped, hard, wii is a console that sells by name, and judgment proved that CV is not a big name anymore, a venerable niche one, yes, but not a big one, and th ¡e game was sooo bad, that even a lot of us, "true fans" didn't buy it. In this internet era, you just can't fail too much before never being able to get up again, Castlevania encore of the night had lukewarm reviews with low sales projections, and then harmony of Despair.... it sold well the first week thanks to heavy Microsoft-driven marketing, but once reviews came in... I'm sure the game will be empty in some months.
Then there it is the irremediable damage it made to the almost non-existant mainstream CV name.
If LOS fails to captivate "casual hardcores", CV will be dependant on us, hardcore and fans; they won't invest big budgets, turning CV in a bargain low-qualty trademark, and if they release bad games, they will lose hardcore gamers, after that, they will get even less money, and they will make even worse games, so bad, that not even us, Cv fans will buy them... and that's it. The saga is dead.