At the moment all exchange backlinks are linked to the main homepage no matter which hreflang tag it is. This is a big disadvantage for multilingual shops backlink building!!! The links are coming from many different countries in many different languages. Thus two things are very important to get their power the right way.

1) Filter function for choosing the right partners to exchange links - filter for country and language!

2) link target editable! - it must be possible to edit link target - e.g. backlinks from french homepages need to link to my french page version, backlinks from UK must link to my english page aso! There are to ways to solve it. Easier and fast to solve just make the field "your website" editable! Or even better and automatic. Set up landing pages for each language. If hreflang is FR link to french landing page (e.g. xxxxx.com/fr or xxxx.com/fr-fr , if hreflang tag is spanish, link to spanish landing page!

You need to add this feature as without it your backlink exchange system is burning link power!