And this is why I am always leery of putting in these types of even near-future systems. There is always a scenario when someone can say if put in the A-12, why can't have this one.
I am totally with you. READ: Proceed with caution.
Generally, from a personal opinion, I am OK with one level of abstraction/guess-work. If a new ship is in the slips being constructed -- OK, put it in the DB.
But if you are taking a concept ship and trying to guess the load out and the timeframe ..... well, pretty soon you are going to jump the shark of reality and publish pure fantasy.
In this specific case, I would say OK. It is a known ship, and it will be upgraded. This group, with some judicious thinking and debate, will probably get it 75% correct. And 75% correct is way better than Government work!