Start on any of the first three planets: Vulcanus, Gleba, or Fulgora.
Choose your planet in the startup mod settings before starting a new game.
Compatible with many modded planets!
I'm not sure how that happened, as the game respawns you on the same surface you died on normally.
Any Planet Start doesn't touch anything related to respawning, so maybe there's some other mod you have that's causing this?
On my server when I died at edge of solar system, respawned on Nauvis which I had never visisted.
On another server just now space platform to Gleba as first planet died and respawned on Nauvis before nauvis was unlocked.
I've just tried several things and I can't get it to ever respawn me on the wrong planet, so I'm not sure why you're experiencing an issue. Do you have any other mods in the save that could be teleporting the player to another surface?
