The great thing about Orion drives are they scale much better with increasing size, so there's no point in going small the way you would be forced to with conventional rockets; just pile on the tonnes and use slightly bigger nukes.
There's two sets involved. The first are strike-drones that act as range extenders for the five one kiloton nuclear weapons on each one - this are for ship to ship combat, by swarming the enemy and hoping enough smaller missiles make it. (With 1500 drones carrying five warheads each, I'd hope some get through the defences)
There's also 400 one megaton-yield warhead drones for orbital bombardment capability.
Lastly, this ship is a freaking massive target. Like, it's such a big target that I'm debating taking off the 1.8GW laser because it's better being deployed on a smaller corvette that can be carried on board. And there are six of those.
I'm debating the merits of going even bigger; this ship uses 5.5kg of P-239 per propulsion shot, and frankly the logical choice of size is to work out the optimal delta-v/kg P-239, and build it to that point.
On MSI and the Olinbar:
There's been a few bits and pieces on the envisioning of MSI society so far in the thread, but I haven't yet laid out everything.
Stellaris itself gives us some insights. We're given that they are a Roman cultural derivative thanks to their use of the Latin namelist for example.
This leads to picking a source in Roman history to offshoot the Olinbar from. Simplifying:
Extremely early kingship
Early Republic prior to the Punic wars
Punic-wars Republic
Late-Republic
1st Triumvirate
2nd Triumvirate
Princeps
Dominate
Western collapse
--
I don't believe the Eastern Roman Empire is a good source for the Olinbar/MSI.
Between these, I chose the late-Republic option as the source Roman period as the best candidate to map the development into MSI from, as there are the most parallels between MSI and the late-republic, and the social structure of a megacorporation is most closely formable from the late-republic; later in history has Imperial Rome, while earlier in history the Republic has yet to become the Great Power that defines the zeitgeist that MSI draws on.
Having selected the source Roman culture, I then extrapolate the changes; a population of Romans are taken, uplifted, and they become the proto-Olinbar, who then become separated from their uplifters; there are a lot of options here, and none of our characters know the real story - Valerius and Sophia know the old tales, but they are not sure if those are just myths put out by MSI to legitimise itself.
At some point, genetic engineering consistent with a Stellaris civilisation taking the Engineered Evolution Ascension perk and related traditions is applied to turn the Proto-Olinbar into modern-Olinbar in appearance, while the toga becomes an inspiration-point for the MSI robes.
Given the opportunity to define a new society, the proto-Olinbar select a leadership like how the first kings and senators of Rome were originally meritocratically selected. This proto-Olinbar society was far more Egalitarian than modern-Olinbar, yet retained traditional Roman views on foreigners and barbarians. Slavery is soon reintroduced for the new foreigners and barbarians; aliens.
Stuff happens for the intervening centuries; history becomes legend, legend becomes myth. MSI become a major corporate power, and their society transitions into a multi-tiered society with the top of the pyramid being Shareholders in MSI, which has long supplanted an early new republic era. (
extrapolate a Roman Republic which never had the return of Pompey and the spending of his wealth accquired through conquest destablising the Rome-specific socio-economic strata) Beneath the Shareholders are wealthy Olinbar trying to become Shareholders (
Valerius' social strata) or a middle class of overseers of the non-Olinbar Indentured Assets. (
Sophia's social strata) Indentured Assets are at the bottom, but there are tiers within the Indentured Assets as MSI designed a social structure that tries to encourage Indentured Assets to aspire within their tier to greater material wealth. (
which obviously is all based on ever greater debts to MSI)
By the present day - Claudia Licenius' argument with Naomi was deliberately written to express the default perspective common to Olinbar Shareholders and high society.
List of previous posts:
Claudia's Perspective
A Similar Previous Post
Vopisca's Perspective 1, Vopisca's Perspective 2
Limited Statistics On MSI Instability
Valerius' Perspective, 1,
Valerius' Perspective 2
Synthesiser, plus insight on MSI's outook on the lease of technology
Initial Thoughts
There is more weaved into the narrative, but to include them all would make the list harder to use.