While the LEGACY releases have been GREAT so far for sure, Sony/RCA needs to be careful and not overdo it with the LEGACY releases (as Sony has a tendency to do when they have something that is selling well). In other words, keep the LEGACY releases strictly to a limited focus and not start releasing albums that aren't really worthy of a LEGACY-style release. If they start releasing too many of these type of releases, then the whole concept gets watered down and isn't as noteworthy, in my opinion.
I don't ever think that the LEGACY releases will overshadow the FTD releases...they are really two separate entities meant for two separate sets of music buyers. While I am certainly impressed with the YOUNG MAN release that is coming out in September on the main label, I really see this set as the exception rather than the rule. 1956 was such a key year in Elvis' career, and in music in general, that there was really no way Sony could overlook such an intrical part of the Elvis Presley legacy. While we fans can certainly make our cases for what we think Sony should release as future box sets along the same lines as the YOUNG MAN set (like the ELVIS ON TOUR material, for example), I suspect that this 1956 campaign and the YOUNG MAN box set is really the only period of Elvis' career that will see something like this being released on such a grand scale. Hopefully I'm wrong though...
The FTD releases are simply designed and marketed for the serious fans and collectors who want to have it all, so to speak. The upcoming AMARILLO '77 FTD is a perfect example...while most diehard fans and collectors can't wait for this one to come out, AMARILLO '77 isn't a release that the casual music fan would most likely pick up...therefore, the FTD releases wouldn't do well in retail settings, again in my opinion. So that is why it's tough to compare the two labels...it's like apples and oranges really.