Actually, I think its a rather fitting lineup.
Crystal Flames is kind of thematic if you think about the high priest's vest with 12 gems. (not sure if it whould be translated to gems, but it doesn't matter much either
)
As for the angels... In the Bible angels are actually just messengers, and appear just like any other human being (ie no wings). If you feel like adding cooler angels you can add Seraphim, angels with many (I think four or eight) wings made of fire, and bigger than normal men IIRC.
My knowledge of jewish mysticism is rather limited...
*checks hebrew wikipedia* (there's a lot of interesting information in the english wikipedia, but you can read that yourself, and I'm kind of busy right now :\)
According to the hebrew wikipedia (which is luckily much more succint than the English one) angels in the bible are just messengers, but later a new meaning was created for them (traditional angels we all know).
Angels can look like people, they can also become invisible (glamour/ethereal?)
There are "angels of grace" which are immortal and angels of judgement (including the good ol' angel of death.), regarding whom there's no mention of immortality.
On rare occasions people can become angels.
Everything has a guardian angel, even plants. The angel that is in charge of mankind is called "Tselem"(image) or "Mazal"(luck).
Each angel usually performs just one function/mission.
Kruvim are... warriorlike angels... They have four wings and "the image of their face is that of the face of man, and the face of lion,and the face of bull, and the face of eagle). Apparently, they guard the tree of life.
picture of assyrian statue that supposedly resemebles a kruv. They are armed with "Haravot Mithap'hot" (it is uknown exactly what this means, but with strict translation they are "turning swords", and IMO it means flaming swords).
Another page states they have the hands and body of a man, the hooves of a calf and the wings of an eagle.
The Seraphim are angels made from a burning material and they praise god. They have six (fiery?) wings, two to cover their legs, two to cover their faces, and two to fly with.
The entry also mentions four "special" angels, Gavriel, an angel of fire and heroism, lord of justice. Mi'hael, an angel of the grace of water and snow, lord of light, and warlord of god's army. Ori'el, an angel of enlightenment and intelligence, in charge of the armies of angels and "hell"(not really hell, but I don't know how to translate :\). Repha'el, an angel of healing. These guys symbolize the four elements (AFAIK, Gavriel=Fire, Mihael=Water, Ori'el=Air, Repha'el=Earth). (these guys are nice elemental summons / hero material)
One last thing is that angels could also be manifestation of a natural force.
Enough of angels for you?
