I feel like your deck (Haven_pt) is trying to do too many things at once. aggro wants the creatures, burn wants the direct damage, TitI wants the spells, etc, etc. RDW usually incorporates burn as its finisher (e.g.
Stoke the Flames from rabble red) but it lacks the spells to reliably flip TitI who is quite literally the best creature in the burn deck. board clear + 7 damage, there is no beating it. I feel like you should look more to the RDW shell to do the fast early creature damage and finish them off with the leftover burn.
Aggro is a ruse. This deck is in no way an aggro deck. The creatures are totally expendable. They serve to soften up the opponent for the killing blow. Either that or for card advantage. Thats why they have evasion or draw abilities. TITI is the exception. I guess I could go almost creatureless, but I'd lose jori's draw, 3 or 4 damage Titan's Strength and stormchaser's coolness that add +1 damage for each burn spell.
Like I said, creatures are a ruse. They're basically early game damage. If they die... No problem, it gives my opponent a false sense of security. He starts playing his stuff, thinking he's safe. Then boom...
It works and has worked consistently. Like I said in the burn thread, this deck's downfall would be catching on. Because if everone starts throwing tons of life gain into their decks, it would kill it...