However you miss the point here. An important one. First, how do you see if the player is capable of roleplaying them? How do you prove that if you have not tried it? If you make the ships unavailable to purchase you are making a full circle. And without one you cannot prove if you are good at it. There'll be lots of people applying for trial which in the end will make it even more headache for admins to approve applicants one by one. Personally I've seen a lot of people trying those and what then? Either they get sanctioned or leaving those as it's not worth the trouble. Yet few get pass and find their way through.
While there is still a strong stereotype in the community about the roleplay I fail to see how it's impossible to do. It's a false assumption based on the past experience. But we don't claim that the Earth is flat anymore, right? Until proven otherwise people will go on with that false stereotype, and I'm very glad that it gave a huge breach as of late. It's a sound of a solid proof hammering it. I'll do my best to tear it down even further until no rock will be left unturned.
In the end this game is all about entertainment, we entertain each other and ourselves. If we start with absurd restrictions based on invalid assumptions we will end nowhere. Play the game, participate and enjoy it, help the admins while you can. This is what it is all about. We build the universe, we make it rich experience, but when we start dictating each one and his dog how to behave properly by putting everyone into tiny cages we are certainly going nowhere.
A lot of people come around shouting "restrict this, restrict that". But they fail to see that the game is not only about them and what they expect from it. A common sense becomes rare in the trenches of selfish and egoistical players that are believing they hold the holy grail of roleplaying in their very hands, which for some odd reason gives them the right to draw the boundaries. Truth is that nobody holds that grail, and that, indeed, there are boundaries, although quite blurred as we pass the threshold of story canon and set out paths into the green pastures of fan fiction. Some are closer, some are less, but this is not a single dimensional scale - a lot of people can come up with alternative solutions which are by no means worse than some of the existing ones. Like the colors, you can have greyscale and assume there are no colors but only shades of grey. Metaphorically speaking it's just that some people don't see the "colors" here in the roleplay for one reason or another, whether it's intentional or simply because they lack of perception.
Now I don't claim anything specific here, but simply pointing out to the possibility of existence of the "color" I'm painting my fence with.
Finally there is some work going on right now. Slowly receiving new paint buckets with new colors. If it all goes well then we'll see new expression soon enough.