Mellotronists

Regarding the amount of memory for a complete tape bank,the Pinder CD 
rom banks,with every note sampled full length,take up 12-16 meg in 
ram apiece.I have my E4K maxed out to 128 meg ram and a 3 gig HD to 
hold most of the disc.Seems to me the cost of rom/ram "should" be 
coming down as technology moves forward.How about having an even 
larger ram area and a CD rom drive to access the library? That way 
one could design their own banks...