I would welcome function that will allow me to drop a language selector on the header and then BSS would automatically copy the site ‘to other language’ version.
When I will switch to another language version(s) I would see highlighted what I did not translate (or did not mark as ‘ignore’) from original site.
Anything I add later into the original/primary language would be copied and ‘linked to all translations’ and from that point behave as stated above.
Basically text replace as all pictures would remain. Highlight function would be a plus but not crucial.
I believe something like this would be useful for many using BSS and should not be that painful from programing perspective to add into BSS.