"it would turn the tool from unusable to basically perfect."
WTF¿ It seems you are the one who is having issues with your saves. The editor is perfect in all the functions it does. If it's setting all the items you have owned to 20, that's not a big deal as that wouldn't cause the crash.
And even if you give yourself an item you shouldn't have, it shouldn't break the menu. Unless you're using an older version, which gave you 20 copies of the key items you had, the updated version fixed that ages ago.
The only thing this editor really needed was the bunny race amount won editor, but that's not so bad.



















