I can only speak for my self as a user of Scribus I would like to see a better svg conversion that works with scribus. Like you say it's not an svg editor but, a lot of Linux programmes work with svg and not .xar and since XaraLX is intended for the linux market/users it does need better svg capabilities.

Failing that a huge increase in XaraLX users so the linux community adopt .xar format in there programmes.