You can still get conviction from monsters that spawn with it
Untrue... I think you misunderstood. The only thing they changed about the auras is the RANDOM aura that rolls when you bind them. If they come innately with the aura, they keep it.
Ah... I see. So they changed nothing. It doesn't take that long to encounter a conviction demon in hell, lol.
Do these demons at least die easier now? Or is it that if you like your demon you can keep your demon?