Drinking my 4th iteration of this beer right now.
I was inspired by a few Trillium beers I had, which I knew used Columbus. They have such an interesting earthy, herbal, dank quality that not only works with but enhances the tropical fruit flavors. To move in that direction, I basically subbed Galaxy for equal parts Simcoe/Columbus
So this time I went with Citra/Mosaic/Simcoe/Columbus (2:2:1:1) for all four additions and bittered with Columbus. I think this is my favorite NEIPA I've made so far (if not tied with the original recipe), mostly peach & mango, a hint of melon and a little pine & earthy dank to balance things out. For what I was going for, I'm pretty damn happy with the results.
And for those interested, so far I've also brewed:
100% Citra (super delicious, just not as interesting as the original)
100% Nelson (not bad, but too much harsh earthiness. took a lot of mellowing out before it was really drinkinable - needs to paired with fruitier hops)
As for next time... I still really want to try 100% Mosaic and 100% Galaxy versions, if only to learn more about those hop profiles. But I think I want to continue down the dank & fruity road and try more combos with Columbus. I'm also curious about some varieties I haven't touched at all yet like Azacca, Apollo, Equinox, Galena and El Dorado.