My opinion on this really depends on what this Ripley link is. I think I side with the crowd that wished to see more of the 'Prometheus' world. Of course, tying it to 'Alien' is by no means a bad thing, but I would be more for a discret connection, like Scott originally envisioned.
Well, I hope they don't imply that the events from 'Prometheus' lead directly to the creation of the xenomorph...That would honestly ruin the creature's grandiosity and mystery.
In the end, I still find myself optimistic.