A vote with the lowest weight, because it's coming from someone who doesn't like HS at all. HS2 would be the way to go to attract those of us who don't like them because its the least bad of the two. :)
But as a fan of things, I can see how staying with the original engine would be more palatable to the original fans unless you can manage to import/reproduce the models faithfully in HS2. And that would be a ton of work up front to invest on a gamble.