I'm a pretty risk averse person. I avoid splashing whenever possible in limited, and in constructed I usually play more sources of all of my colors than stock lists, even adding an extra land or two to my decks to make sure that I can cast my spells. It is from this perspective, that I pronounce Raphael Levy's GP Manchester winning deck as completely insane.
Incorporating Chandra, Flamecaller into Selesnya tokens is a pretty sweet innovation. I though about adding Chandra to my deck before this weekend though I didn't know how well I could make the mana work. Raphael Levy apparently started on a similar line, though instead of tweaking his manabase he decided that he already had four Oath of Nissa and that you only live once.
I would be amazed if this become the stock version of the deck, though I would think twice about not making a tokens opponent sacrifice their Oath of Nissa when you cast a Dromoka's Command in the future. This is probably the greediest slot that I've ever seen in a constructed deck, and I say this as somebody who once splashed a sideboard Cruel Ultimatum in an Izzet deck. Perhaps Levy was tired of winning Grand Prix utilizing only spells that his lands could cast.