misscrabtree456: Not necessarily, i just turned down a 2 slot upgrade multitool. It didn't have a Plasma Grenade Launcher. I use that all the time.I can due without a Boltcaster but not without a Plasma Grenade Launcher. So I had to let it go.
MrFob9138: I turned down ships and equipment with more slots in the beginning as well but I quickly learned that this is not the way to go. Always take equipment and ships with more slots. The reason is this:
The procedural algorithm will (at least in my experience) always generates replacement equipment that has a range of 1 slot less to 2 slots more than what you have (at least for ships, might be a bit different for tools).
For example, if you have a ship with 25 slots. Any ship wreck that you can find will have between 24 and 27 slots. So the way to gradually improve is to always update to the ship with more slots because if you take the replacement ship with 26 slots (even if it has worse upgrades and lot's of damaged stuff) the next wreck you find will have 25-28 slots. So this is how you improve. I didn't test quite as much with Multitools but I am 99% certain it's the same deal.
And slots are the only thing that really "sticks". You can always replace/make upgrades but this is the only way to improve slots.
Note: You can of course go faster by buying ships from traders but especially with 35 slots and above, they get so ridiculously expensive that farming ship wrecks will be way faster than farming enough units to buy a better ship.
Multitools, you can buy since they are not as expensive (I think a 24 slot Multitool only costs about 180.000 Units) but I think even when buying, the range of slots that are for sale depend on your current equipment (it's just that the range is much wider, e.g. I had a 17 slot tool and I could buy a 24 slot one).
Hope that info is helpful. Of course, this is only for people who try to upgrade efficiently. If you don't care and are happy to progress more slowly, never mind.
A Plasma Grenade Launcher is not not an upgrade. It's something you upgrade. If it's not there than you can't use it Period, no upgrading, no nothing, it's not there. So I turned it down. I am not going to grind to upgrade half a mulitool, then use half a mulitool while hoping to find find a better one when I have great one now. Let's get real.