Bump. I was going to start a thread on this topic.

Both Damnation and Radiance are really underwhelming. You say you're getting 5% of your MP back with these abilities? I think the most I've ever gotten (while on my 50 CON) is 30-something MP. Usually it's much more pitiful, like 7 or so.

If they could make these abilities more effective I think we'd see less unhappy mages. I think the return of ~10% would be more than sufficient. For me, that would be around 100 MP - which is what I get, on average, from a successful Siphon MP.

Hopefully they'll look into strengthening these abilities in the next patches.