In my opinion bridging to Java plugins would somehow defeat the purpose of Mineserver.
If i am not mistaken it is supposed to be a very lightweight and fast server, while Bukkit
is more like a mod of the original server.
I would rather like to see a feature-complete Mineserver, which is easy to add plugins to than one that is beaten into an interface just to meet compatibility with a bunch of stuff already done. I mean the whole idea of Mineserver was to create a complete re-write that is focussed on performance, so why should the devs bridge to plugins that are not really optimized for how Mineserver works?
Don't get me wrong here, i'm a fan of
http://en.wikipedia.org/wiki/Don%27t_repeat_yourself but i do think sometimes stuff has to be thrown away to get things forward. Backwards compatibility (i do consider the java server inferior here indeed) is not an option, in my very humble opinion.
If at all, it is a thing to achieve when Mineserver has all caught up with the original Minecraft server.