We have to remember that this is a game. The creators never really thought that after 20 years people will still be arguing and playing it. Even after all it's reprints and editions. So when Kiniur was created. It was seen as big enough to be a Cruiser. High Guard was most likely not even thought of at the time. So when the ships got big. It remained because of the support matierial for it. The Idea of Colonial Ships and Line ships is a good way to handle this problem. Small ships are created by colonial local navies. The local navies field by Planetary governments and Local nobels.
The colonial forces fight the "Good Wars" and hire the mercs and generally provide with adventure. The idea that there is a Imperial Navy with mucking big ships and resources to hunt you down provides the spectre that keeps my PCs from being to bad or good at their jobs.
Imperial ships IMTU are rarely seen and when they are they are either flavor or sometihng to be avoided. Colonials appear often and as true warships they should be avoided at all costs.
The colonial forces fight the "Good Wars" and hire the mercs and generally provide with adventure. The idea that there is a Imperial Navy with mucking big ships and resources to hunt you down provides the spectre that keeps my PCs from being to bad or good at their jobs.
Imperial ships IMTU are rarely seen and when they are they are either flavor or sometihng to be avoided. Colonials appear often and as true warships they should be avoided at all costs.