I will be interested in either way they go meaning v-twin or v-4. I happen to have both an RSV and a Stratoliner in my stable and I love them both. I do love v-4 power and would hope that if they do go v-twin they do not use Royal Star or Venture in the name, come up with a totally new name.
The Strat motor would make an awesome touring bike motor because its got monster torque with potential for even more. My bone stock Strat will pull away from every Harley in this part of the world, even the ones with built up motors. The Strat has a really low centre of gravity compared to the venture, so if they go v-twin and fixed fairing the bike will be easier to manage at slow speeds, something that some have issue with in its current form.
As said before, I will be in the market by the time they release something, and will be interested in either form.