Wiley is correct. A lot of the previous Nebula class ships that have been made by previous modders are great quality works... and some of them have the Nebula impulse engines. There's a lot of time and effort put in to building a model, unwrapping it, and then texturing it. At this point, I think we should stop with the requests to add this or that to Wiley's works or to even ask him to rebuild a model completely to suite our personal desires. Furthermore, we should also pay attention and recognize the works others have recently contributed. The efforts of the modders contributing to this community is what keeps it from being dead. So ease off and be happy with what's being delivered. If we recognize and appreciate their efforts, without requests, it will encourage them to continue delivering to this community.