February speculation (MERGE)

For example, a major plot point in tlj was that the smaller cruiser was faster than the bigger star destroyers. In real life, speed is a function of hull length, so the larger ships should actually have been faster (common sense agrees since they have massive engines in the back).

Holdo’s sacrifice doesn’t make any sense in the Star Wars universe, because hyperspace is an actual place that ships travel through (taking shortcuts through higher dimensions to travel faster). That’s why the computers have to calculate jumps rather than just point and shoot (ain’t like dusting crops boy...). So entering hyperspace shouldn’t have ended up crashing into other ships, because it goes around them, not through. If it did, the Star Wars universe would be full of hyperspace missiles that tear through enemy fleets quickly, and the first order’s new planet killer would just be a big rock that they attached a hyperdrive to so they could ram it into a planet...
In contrast, Poe’s attack run against the dreadnaught and the following bombing run were, while displaying wild tactical ineptitude and ship design features on both sides, consistent with Star Wars physics. Also totally excusable because the cinematography was awesome.