I agree for the most part ratty, its not a build i imagine doing to well, but i dont believe anyone here has really tested shouts to the limits of potential...
Hopefully someone gives this a go and posts their findings. There may be yet shout combinations that none of us have even considered, i make a point of always maxing elemental fury because it rocks!
Apparently you can stack up marked for death shouts ie) two level 1 MFD shouts is more effective than just one level 2 MFD shout.
Maybe ice form when combined with minions/summons would turn out to be something really overpowered....
I dont know because i havent done it myself...