I see that this basic feature that has been requested by so many for so long is still missing. I'm definitely concerned about the lack of response to something that I think any developer should understand. For this reason, I'm currently searching for another option.
I like the site builder on SS, but the lack of file access and image management is a serious drawback that I can no longer live without.
SquareSpace, your site builder is amazing so if you ever fix this important this then maybe I'll return. For now, I'm still here only until I can find a decent replacement with file access.
Taking suggestions for alternative hosting. I'm currently eyeing BlueHost