Byzantine politics are very reflective of the source material, after all
Haha though points on all sides were valid, of course
On the upgrades: ah, of course! I'd forgotten how many discrepancies some of the other lists have! At least the AM is a relatively easy one on this case—I suppose the options could be listed under each ship in the list (and the effects stay in the profiles section) but maybe that's an experiment for another project.
I'm familiar with WargamerAU because Australian online fora are a bit rare
They have some interesting stuff about BFG and Epic floating around, as well as some generally interesting discussion about rules and background.
Indeed, I agree it's beyond BFG:XR's scope (and would harm efforts to use it as a new standard). I'm glad to lend a physics-trained mind to the mix of liberal artists and games designers at some future point!
I think the BFG:Armada game is very interesting from a game design point of view because of the sacrifices and changes they've had to make for a working game system. I'm not sure if I'm so keen on every second ship ship getting dorsal turrets standard or some of the other positioning choices
but I really like how they've created the bomb mechanic to bring some more parity between Nova Cannon Imperials and the others. Another subtle change they've made is improving the power of things like powerful prow (e.g. Murder, lance escorts, Dauntless) and broadside lance weapons—the Dauntless is pretty scary in BFG for a lance shot but an Acheron can rival other Chaos gun battery cruisers for sheer damage output (where its table-top version cannot).
On a different point, Videogame Armada shows how deterministic special orders (rather than the random rolling test) can work (though my thoughts are less in that direction and more in making Special Orders a consumable resource). Command and Control can be experimented on quite well with such a sturdy engine as table top BFG.
There were ideas floating around about a Skirmish BFG (@horizon had some work on it, if I recall correctly!) and I think Videogame Armada (VGA) is, as you say, an excellent starting point. And might make for some interesting comparisons with WH40K Roleplay space ships in Rogue Trader....
Thinking Stone
PS: I've always wanted to make the Rouge Trader, ever since misspelling it the first time....
PPS: You're very welcome for the comments! I'm glad I can spout my ideas at receptive people! One day I might even become less verbose... (though I like to try to help others understand why I have certain ideas).