Notice that the longer you 'charge' a shout, the more powerful it will be. So post the minimum and powerful version of your shout. Who knows, Bethesda may be looking for suggestions if they haven't worked all the shouts in yet:) (I would also think that these shouts would not include mage ice, fire, shock so your suggestions may need to be creative)
So with the unconfirmed ones above, I'd like to see.
1. Slow Time Shout: (low) slows to 1/2 time for 5 seconds on target; (high) paralyzes for 5 seconds on same or lesser target.
2. Force Push Shout: (low) knocks back target a few feet; (high) knocks back target and causes target to fall
3. Call Dragon Shout: (low) dragon fights for 15 seconds; (high) dragon fights for 30 seconds.
4. Earthquake Shout: (low) ground shake stagers target draining stamina; (high) ground shake drain stamina and causes target to fall
5. Beast tongue Shout: (low) all wildlife (birds, etc) in 30 meter radius heeds your call to fight for 15seconds. (high) 50 meter radius, 20 seconds.
6. Teleport Shout: (low) stops world time for 3 seconds (hero then moves to different location); (high) stops world time for 5 seconds
Ok I need to brainstorm for more relevant shouts...