It is helpful, yes. But consider that your highest DPS melee weapons in DAoC were what, 16.4dps? Focus shield was what, 33DPS IIRC? This reflection is so far and away weaker than even the most gimped melee and spell damage that it isn't even in the same sport.

Nice idea but the WoW mechanics make it completely unviable. Good for random aggro so you don't snap-aggro late adds, yes. Unviable for what you're talking about.