There is already a thread about SB, but I wanted to focus specifically on its interaction with hyperspace terrain.
The design goal of the terrain is to make the player actively participate in travel, seeking clear routes instead of flying to their destination in a straight line. However, between SB and Navigation perks, this incentive has been removed. If you're SBing with Navigation 3, deep hyperspace slows you down only a tiny bit or not at all and storms slow you only a little, and you'll punch through them so quickly you'll take very little CR damage. It's easier, faster *and* cheaper to just lay in course, turn SB on and take a nap rather than try to actually navigate.
Here are some numbers for a small fleet with base burn 9. Highlighted in red are the numbers that I think are a problem.
Terrain penalties shrink dramatically as you stack bonuses and become almost negligible with all of them.
I propose the following changes:
* Apply hyperspace storm speed reduction after the SB bonus, not before, to reduce SB's impact on speeds in storms
* Replace the +5 burn perk at Navigation 3 with something else. With it, it's possible to bump against the burn 20 cap, and once you're capped, small penalties become irrelevant. (Maybe just straight-up remove it. Transverse Jump is a big enough deal that I'd consider getting Navigation 3 just for it alone.)
With those, the table looks like this:
Navigation 1 still decently reduces terrain impact, and SB still makes travel in clear space much faster, but cannot be used to trivially punch through storms.