I've.... my friend hasn't used the save editor for anything more than expanding inventory slots and adding a few resources when in mid-build. It's tinsy bit cheaty perhaps, but even with the advance mining tool resource gathering can get a bit tedious, and I'm they're not effecting anyone else's gameplay, so at worst only cheating 'themselves'.
There's a couple of things I do with the save editor, which are kinda cheaty, but who cares...
First is to expand a few cargo slots & inventory slots, because it's just a pain having to get them all in the game. Done it once on one save - don't feel the need to repeat.
Secondly, I also give myself a single S-class scanner upgrade, and a single S-class environment protection for each environment. 3 is the max for each, so I'm still leaving room for discovery. A single S-class movement upgrade also.
More than that, and I find I become "God" which ruins the fun slightly.
I also run a few mods, such as one to reduce launch requirements by 90%. I tend to skim around planets for a fair time, and land when I see something interesting... but a 25% fuel requirement scuppers that freedom. So I remove that limitation.
Lots of ways you can "cheat" in this game, whilst still keeping it a game.