Keep out the CLx's etc. They're more unbalancing anyway.
That I don't see. With the excepton of the ISC CLX, none of the CL X-ships are any tougher than a BCH.
D5Xd is a better deal (for the price)* imho* than a DXD, same with a CLX vs a CX, and the CWLX is a far better deal than the CCX
(with it's stock disrupter arcs....odd )
I say give all the races a CX type ship.
Then make any kill by an Xship worth 1 vp more than it normally would be.
(The race demonstrating "their" superior technology)
Might give people reason to use them rather then the plethora of DN's and BCH's we seem to be heading for.