For pressure clearly the hulls are currently capable of handling an external vacuum, how much external pressure can be withstood is untested. So we have one of two options; handwavium it away (ignore the problem, meaning we could visit the floor of the deepest ocean or gas giant), or specialised armour.
Why does the armor need to be specialized? Our ships are already incredibly armored, considering they can absorb multicannon rounds, rockets, lasers, cannon shells, plasma balls, etc. They are tough, they can handle a little pressure. I bet they can handle a
lot of pressure, especially if you consider not all of the ship needs to be maintained at 1 earth atmo.
it would be nice to feel the ship be pushed around a bit with winds, probably in a similar way to how the ship wanders when you point it nose down in an environment with significant gravity in effect.
Yes.
For higher pressure fluid environments (gas and liquid) I can imagine either we are simply not allowed there or our ships performance becomes more restricted up to a point where (again) we are just not allowed to go further.
Bah, let me exceed crush depth if I want to, watch my canopy crack and shatter, and well, magically appear back at the station, LOL. Might add for some fun combat play, if we can hide in dense atmospheres of gas giants while the enemy "depth charges" us from orbit.
That said, there definitely needs to
be a "crush depth", otherwise it will be hard to take all of this seriously. I already avoid high-G worlds in certain ships, because you can't tell me those tiny wingtip thrusters can hold my Type-7 from falling out of the sky over a 4G world
