I am unsure if this was already an option I may have missed during the early beta, but I did not see a way to tag items to ensure they are not auto salvaged. I did see you can tag as ‘junk’ but personally I would prefer a way to quickly tag rare items with good stats as ‘Do not salvage’ that way I can tag on the fly, and mass salvage and move them to storage later as needed.
If I happened to miss this being a feature please let me know how I can do it. I would otherwise like to request this type of feature be looked into, as I think it would save a bit of time and make it easier to recognize items to keep in inventory space.