I have a few takes.

Best support will be Shadow demon, skill build will be 4-4-0. His Q does a shit ton of damage especially when paired with W even in lane and he scales incredibly well. Give it a try.

Chen and SS are still incredibly strong of course and are very easy to play.

Best offlane I’m seeing rn is sandking. Item changes really really helped him.

Best mid will be hard to say, but I’m thinking we’re in for a Lina, OD, and clinkz patch.

Really no idea about pos 1 because I don’t play it