Hello aarseniev!
That's exactly what I need, unfortunately Junos os 12.3, not 16. But it's great to know they are adding it. Maybe you need vpn-apply-export to make it work on export (just guessing).
I needed to filter on RD not RT, because I wanted the router to change the metric only to the VPN routes from other PE's, not it's local ones. And if I filter based on RT, then it would also match the VPN routes from the local routing instance.
Thank you very much for your help!