seriously if done right,(and in ridley's hands i have a bit of hope since it is after all his movie), it will be great, they dont even need to go straight into an origin story,I didnt hear anything that it was going to be about the xeno's origins,its a prequel yes,but that doesnt mean that all secrets will be revealed. I think ridley loved the mystery of the alien,so i guess he will continue to stick to that,if they origin in,they will only lightly tap on it. we can only wait and see,but seeing a pure alien film again on the big screen makes me happy enough.