This is just an idea that we had after discussing it with the hop farmer:
With a white, you can add the hop as an aromatic and a little bit should shine through, gently, a nice mellow hop addition, with reds you would have to add much more for it to really shine through (assuming that it is added as an aromatic after fermentation) this could result in the hops over powering the wine, I'd really like to avoid having a wine that resembles a spicy wine.
Since we really can't add the hops during fermentation, it tends to ferment the flavors out, I suppose that we could boil hops in a small amount of water for 10 mins and add it to the wine, but this can release oils that don't belong in wine, and I would like to avoid any bitterness from the hops added to the wine.
Again, this is just my opinion, nothing but an educated guess at this point.
Overall, with a white wine, you would have better overall control as you would taste the hops faster than with a red, allowing you to remove the hops before they became overpowering.
What were you thinking? I'm open to all ideas.