I've read some of the postings here, I take it being canon on ships, types, and specifications is not a prerequisite of a mod? If you can imagine it it's pretty much accecpted? I draw the conclusion that most mods are given peramiters and used in the game?
Other thoughts...
As the Wells class is my subject, and I have done extensive research on the "Relativity" I can answer questions about canon references. Take for instance those honeycomb parts of the exterior. They are temporal shielding for the Warp Core, Bridge, Disruptors, and Impulse & Temporal warp drive areas of the ship. They also encompass all leading and trailing edge surfaces of the ship. The shielding prevents stray chronometric particles (they are a corrosive particles to matter in flux in a temporal wake) from affecting the sensative areas, they also insulate those areas against differences of time as it affects the matter of the entire ship. The ship will materialize, at the destination, as a whole, in the exact same point in time-space, rather than parts comming in at different parts of a micro-second. It's a quantum physics thing!
Another purpose the shielding has is to allow the ship to engage in a technique called slip-streaming. Where the ship can go back in time, make an adjustment, and return to the exact point and time of departure. If something happens in the past that erases the ship from existance, the shields prevent the ship from being erased, so it can correct any further discrepancies. (it's like a buffer) No paradoxes, no disentegrations from time jumps are possible with operating shields in place. The ship exists, when shielded, in all time-space, and cannot be removed. Even by temporal weapons. No other spiecies has this technology. As such other time travelers are not shielded against disintegrations. The federation disruptors are truly the most powerful weapon aboard any time ship.
Another part of the equasion is that the ship can only go into a predestined time, mostly the past but some of the very near future. If the events of a singular time line, which is contrary to the ships existance, take a turn in the time space fabric, the ship can travel there. Otherwise time travel to any other event is not possible. Basically the federation timeships can only travel to points where the normal timeline is or has been disturbed by an illeagle time event. No predicting the future, no changeing the future is allowed by federation time ships or known temporal technology. That is the Temporal Prime Directive. However federation time ships can correct events that happen outside the normal time line. That's the Temporal Accord Councils governing vision and power. So the events that happened aboard the Relativity, Aeon, Time Pod(31st century), Enterprise, and Voyager were all predestined to take place as a part of normal time-space events.
Future travel must be accomplished with the assistance of the Continum, or (the "Q") for short. Because seeing certain parts of the future are permitted by the Q, those events are predestined. Correcting a bad timeline change is part of the normal time line which is fixed and finite all at the same time. Paradoxes are mearly predestined events that have predestined outcomes. There is no such thing as an infinte time-loop, just the appearance of one. And everything is accending evolutionary lineer pathology. However it is not without omnipitant influence or guidenance. Only historians keep the past alive but even they have recording limits. Perhapse Stephen Kings Langolliers eat up what we can't recall or record.
PS Parallels and deviations from normal time-space are not continual or perpetual existances. They are predestined anomolies that get the predestined attention they are supposed too. Parallels exist only when normals exist in them, once corrected the parallels cease to exist. Deviations are integrated as normal. Hence the "Standard Deviation" term used in mathmatics and Quantum Physics are very close relatives. The laws of probability give us our short sighted future predictions. Mathmatics exist, therfore deviation amd probability also exist. Anything else is the undiscovered predestined unknown.