I finally completed upgrading my version of this deck. This is what it currently looks like:
(
http://www.screenshotdumpster.com/)
I know, it doesn't seem like it's completely upgraded, but I don't think this deck would work well with even more upgrades. I tried using more Destroyers, but I felt that doing that slowed me down in the first turns. One cremation gives you 9 fire quanta, which could play one golem and one destroyer, so I decided to balance their numbers.
I removed the shield and swapped out the deflags (or rather explosions) for steals (which is why there's a werewolf less). I added two thunderbolts to add some creature control.
I still swap photons out for upgraded sparks (ball lightning) on occasion, depending on what I feel like. If you happen to have three in your hand accompanied with two thunderbolts this could net you 25 quick damage, which is far more significant than the 9 I argued for earlier in this thread.
I added replaced one of my original two spirrits for a Graviton Firemaster, since I found a lot of spare fire quantum in most games I played, and this had the extra benefit that I'd never have conflicting water quanta needs. With the increased need for fire quanta, I exchanged one nova for the last cremation.
I still don't use a graboid though, since I find myself running out of earth quanta far too quickly already without one.
I think this is the best I can come up with for this deck type, at least for a 30 card deck. I have (virtually) no problems with T50 (yeah, bad draws...), and it's also a great PvP deck. I have debated, however, to add an hourglass and make this a 31 card deck. On an early draw, this could make this amazingly fast deck even faster, but I don't think it's needed.
Anyway, I hope you'll have as much fun with this deck as I do.