Couldn't Damnation just teleport you to Avernus now? :D

[Arn]

Damnation's description says your foe gets banished to the Hells. Well, we have the Hells as an actual in-game area!

Why not be true to the spell's description and actually send your foe to the Hells?

(I'm mostly joking about this idea, since I could see it being abused in like fifty ways, but hey, wouldn't it be cool?)

[burbles]

I'd be one of the first to start offering Avernus one-way express transportation service if it did)

[Hendrak]

I support this new train trail!

[taylorstar]

I think it would be cool to have a segregated area for damned souls have some kind of VFX set up to make people in this area to make people look like lost souls that can be seen from those outside.

All be it a place where people can respawn from so they aren't stuck in the box.