It doesn't really matter if there aren't enough players to play on the "eve" server. I don't expect my ships to be used because players play with a different approach. Even now all I see people do is build their own ships or take someone elses ship and make it their own. They never really fully invest in making an experience out of the set of ships they have. Maybe that will change. On starside they are still setting up a lot of the server. But still. There's no incentive to play with my ships, ships that function differently. There might be special events featuring my ships in the far future.
I would, as long as minor customizations (such as the one I posted earlier) are allowed. Of course, without the OP systems.
One way to encourage people to use the ships of your design would be to adjust shop prices. For example, greatly increase the cost of shield blocks, weapon blocks and such and reduce the cost of hull blocks. Even if people don't use your ships, they would still build something in balance to your EVE designs.