Ok, it sounds dumb, but hear me out. I was recently leveling a new alt (Paladin), and I decided to try out the haste enchant. 10 Haste rating at level 14 gave me something like 20% haste. So, here's the idea.
My level 10 twink would have dual lifestealing enchants to keep me alive, since I'll have much lower health than the 19s. On my head, legs and hands will be +10 haste rating enchants, which should come close to 100% passive haste. Swinging my swords like a madman, I should get loads and loads of lifestealing procs, which would easily equalize my DPS to the 19s with slightly better gear.
The question is survivability and talents. Has anyone tried this, or know of anyone who has?