Think outside the box, too. I love blending Crystal or French Strisselspalt in my IIPA flame out/WP additions.
I've heard a few others using Crystal in IPA's, but that's a cool idea with the Strisselspalt. I'll have to try that sometime. And I agree in general with that strategy. Noble-type hops add a nice complexity when used in combination with more traditional IPA hops. I've been using Ultra a lot lately in my hoppy beers (usually in combination with Amarillo, Citra and/or Columbus). That's another reason why I'm such a big fan of Motueka. Even though it has this great lime zest/lemongrass character, you can definitely pick up on its Saaz lineage in the flavor as well.