First of all, I don't think the decision of feature implementation should be on the actual devs (sorry Frontier devs) who work on implementation or testing. Why? Because, devs and testers are usually clueless about how the product or service should look/feel like to the end user (again, sorry Frontier devs).
On the other hand it shouldn't be a decision made by the community either. Why? Because, today's gaming community is made of people that want to go in, shoot or do whatever for 30 minutes, log out and make the game as easy and convinient as possible for them in the process. I don't blame them, that's the gameplay that suits most of the people and that most of the games publishers adopt because it gets them a larger chunk of the market (people). Long run, what makes the game 'easy and convinient' is what ultimately kills the game. How? Well, the people who are 'hardcore' fans of the Elite and the genre who would like to see ED go on for years to come, would leave because the game would start turning into an arcade. On the other hand, the 'larger chunk of the gaming community' will leave regardless because they don't stick to a single game as they get bored by difficulty, or 'lack of content' or whatever. Again, I don't blame them, everyone has a right to an opinion and to do what they like.
Someone from the company who has a greater 'vision' of a game in the long run should be the one who would 'pull the strings' on future implementation of additional features/content, not the devs/testers or the community. Sure, both groups should be able to contribute with idea(s), but those ideas should not be the main guidelines for the future.
Having said all this, I'm an Elite player since the 80s and I loved it. I also love the ED because it's not 'story based', but instead the game allows you to create your own story, your own content. I also started playing EVE Online back in 2008 and I'm still playing it. EVE Online doesn't have a huge gaming community because it's not easy and in many ways it's not convenient, nor does it have 'story based' gameplay. However, because of that it has a 'dedicated' fans and gaming community who kept it alive for 13 years now and still going. I would LOVE to see ED go on for many years to come, just like EVE Online, and for that purpose I think Frontier should be very careful about what they implement.
I voted for the delay, even if it would 'only' break immersion. In an open universe where you don't really have a storyline to follow from start to the end, immersion is one of the key factors. I think instant delay would break that immersion and set ED on a roadmap to being just another arcade game where you go in, constantly grind money (for whatever reason) and running missions/quests/CGs. In the future I would actually like to exclude Frontier from this completely and see these ship transfers to be done by players in carrier ships, where a wing or group of commanders would be able to intercept that carrier and with enough fire power destroy it along with it's cargo, etc. Of course, another group would be able to wing up and defent the carrier along it's route. That would be immersive, fun, and would bring some adrenaline rush into both the attackers and defenders, especially into the carrier pilot.
