If the demos is to be regraded as a Raid ship, then I have some suggestions.
With a start date of 2260 it is 2 years after the Dargan, and so fits neatly into a revamped Centauri fleet structure built around the Dargan, Liati, and Adira. But reusing the old Vorchan hull.
If the Demos is based on the Vorchan hull then changing the crew numbers, or increasing the damage by more than a couple (to allow for local strengthning) doesn't make sense.
On the other hand including some of the new technology to address weaknesses in the Vorchan would make sense.
So increasing the weapon power as a weapons re-fit, towards that of a Raid level ship makes sense in both game terms, and in fleet design rationale.
Improving the survivability of the ship towards that of a Raid ship, by methods other than increasing the crew size or the amount of damage the ship can take, would also make sense in both game terms, and in fleet design rationale.
So adding Anti-Fighter capacity (present on both the Dargan and Liati),
Stealth (Dargan), Dodge (Liati), Flight Computer (Liati), or some combination could be used to present the Demos as a Vorchan brought up to date, and used as a testbed for some of the ideas later incorporated into the Liati.
It would also make the Demos into an interesting Raid level ship - fast, sneaky, and packing quite a punch but toast if you get past all the layers of defence.
Very much in line with the Liati and Dargan, and (I think) with the Centauri ethos.