This really bugs me too.

I play a Nausicaan, and I am annoyed by the oversight that you can use your free Lt.General ship token for the Orion Marauder, the Gorn Varanus... but NOT the Nausicaan Garumba Siege Destroyer?!

Marauder: Engineering Consoles, Cmdr Engineering BOff.
Varanus: Science Consoles, Cmdr Science BOff.
Garumba: Tactical Consoles, Cmdr Tactical BOff.

This annoys and offends me not just as a Nausicaan player, but a TACTICAL Nausicaan player. Hopefully Cryptic comes to their senses and makes the Siege Destroyer available with your Lt.General Ship Plaque.