I just did a complete playthrough in survival mode, where you only get a 40th of the inventory in each slot, and if you die, you lose all your backpack inventory and can't recover it. I don't know if it was a bug or intended, but I couldn't use a portal even though I had all the glyphs and had done the full Artemis and Atlas story-lines. I was lucky to stumble across my favourite exotic early and a decent multi tool.
I've done the first leg of Expedition 4, and I thought it was pretty good. Experience from the first leg of Ex 3 was very useful, especially in respespect of making fast money. I made one big mistake, which actually turned out OK. When I was on my way to find my ship, I stumbled across another crashed ship, which I decided to claim for the money and nanites, but once I'd claimed it, the marker for my official one disappeared, as it only shows the marker for your present ship. In Ex3, we got an exotic ship to start with, so I was worried that I had effectively swapped it for a broken C-class shuttle, but I think the official ship turned up on my freighter, as there were three ships on it when I'd only had two. They were all mine because I scrapped two of them. The two that I'd been using were both shuttles. The third was a C-class Hauler, like above, which got melted down before I did anything with it
Tomorrow, I'll have to spend some time getting frigate modules to get the inventory teleporter thing. It's a bit dodgy using a shuttle with hardly any shields and no fire power. It reminds me of Odyssey. You have to sneak up to the freighters, identify any cargo pods with the modules in, shoot then run like he'll to the station before the sentinelsget you. It's a bit different to my fully-loaded ships, where I just blast everything on the freighters and the sentinels and steal everything in sight. After that, I'll do the leg 2 milestones, one of which is to get burnt.
As a spoiler, you can shoot the big worms that rear up at you with the gun provided. I think you have to shoot about 30 of them for one of the later milestones, so you might as well do a few along the way. You also have to steal a load (11?) of whispering eggs, so get them when the opportunity arises.