Appears to maintain or comaintain 26 packages:
https://admin.fedoraproject.org/pkgdb/users/packages/mariobl?acls=owner&acls=approveacls&acls=commit

139 reviews either in progress or completed:
https://bugzilla.redhat.com/buglist.cgi?email1=mario.blaettermann%40gmail.com&emailassigned_to1=1&emailtype1=substring&component=Package%20Review&query_format=advanced&list_id=554554

Mario is very active and experienced on reviewing and we can definitely need his help for mentoring new contributors.

+1

I sponsored Mario about 2 years ago. He did a great job in reviewing and maintaining packages since then. Thus,

+1

from me as well.

+1

Mario is easy to deal with, active, and I like his interest in things.

+1 from me.

Mario has a very friendly and cooperative manner. He's doing many reviews, and we could definitely have more like him.

Mario's done 35 reviews for me alone - they're not the most challenging, but he frequently picks up on the little things that often slip through the cracks. And he's always been very easy to work with and quick to respond. A very big

+1 from me

+1

Well, it's been a week. I'll toss in my own +1. With that, I count +7 -0, so this request is approved.

Mario, thanks for stepping up; you should now have your sponsor privileges. Do keep in mind that as you are not a provenpackager, you have no special access to the packages of those you sponsor; if you want this access, make sure that you're listed as a comaintainer.