Well, I tasted the IIPA that I made with this blend last night. The hop character is pretty muddy (granted, part of that is just that I used way too much hops - dry hops in particular). While I wouldn't completely write off the idea of making a hop blend again, I would definitely be much more selective in choosing what hops to use. The Nelson Sauvin is too assertive to work well in a blend, and some of the others don't really add enough to be worth including. I have enough left for another batch or two, so I'll try it out in a more reasonably hopped beer.
If I were to do this again, I'd consider Citra + Galaxy + Amarillo + Motueka. But honestly, I don't think it's worth my while to pursue again. Hops blends just don't make as much sense on the homebrew scale as they do on the commercial scale. It was a fun experiment, but lesson learned.