maybe, I've got no clue. It may also be me, as i'm (at this moment) using a chromebook to play. I have a pretty good PC at home with steam, though. I would also like to add another rarity reccomendation; Mythical.
Myhical would be for items that take alot of effort to firstly find, and then to get it would also be a chore itself.
anyway, the export save is a good idea, but what about, say, something like an account? the only purpose bing for the data, unless you add multiplayer into it, in which case, it'd also be used for the username and ranks/tags.
I'd also like to add, your an amazing dev, the most interactive that I've met, like, ever.