Yes... partly... because I know Resi 4 at least inside out and so if I'm going to be playing through it again then I'd rather have the achievements for doing so as an everlasting record of it, especially if there's some in there for say playing it on professional mode etc.
And now knowing that there will likely be no Move support, I'll definitely buy it on the Xbox 360... the wii version will still remain superior though due to its excellent control scheme but this would be worth me picking up if it's a budget title because I'm not as familiar with Code Veronica, and if enough people buy this then... hopefully they will make another similar compilation featuring REmake, 2 and Nemesis.
However what I'd really like more is Resident Evil 6 but... if Capcom need people to buy more remakes in order for that to happen then so be it.