I'm not sure what kind of RAM/VRAM constraints the title screen is under, but i can tell you the 'Castlevania' logo and the 'Rondo of Blood' subtitle both fit nicely into a 16-color, 176x128 sprite block. That totals up to 11,284 bytes of data in RAM/VRAM. Not much at all, really. In contrast, the original title logo looks like it's 256x80, which comes out to 10,284 bytes in RAM/VRAM. So the new logo would literally only be 1000 bytes more in RAM/VRAM... hmm.