Should I build in a "request edit feature?" or something along those lines?
It's beneficial to have other people edit (I want to on coinmap, it's not possible)
and yes there's also the risk of sabotage.
I think this is a nice compromise.
Which could then send an email to either me or whoever made the entry, giving us the option to quickly allow the edit or reject it, or contact them for for info/etc.
That's exactly what I'm currently building for a similar style site, although my data is from crawling. I think it's the best course solution. It's sort of how IMDb works.
