Feel free to add whatever you like but i think this is how some of the spells should go / there focus cost. also most of these abilities will probably seem over powered
But first,
What we know about hunter's and cataclysm so far:
# Focus regenerates continuously, Steady shot improves the rate of getting focus bag.
# Rogue energy comes back at a 10 / sec rate, Hunter focus comes back at 6/sec (12/sec with steady shot)
# A shot costs 30 to 60 focus.
Aspects will now have a stance bar and cost no focus
Traps dont cost focus
http://www.wowhead.com/?spell=48996 - 30 focus and now take 20% less damage if deterance and disengage are down
http://www.wowhead.com/?spell=53338 - 0 focus also increase crit chance when the target is standing still
http://www.wowhead.com/?spell=49045 - 45 focus 3 second cool down
http://www.wowhead.com/?spell=49000 - 25 focus and as survival spec (assuming they move / change some things in the current tree) its final tick is an amount equal to % weapon damage
http://www.wowhead.com/?spell=5116 - 60 focus 10 second cool down
http://www.wowhead.com/?spell=20736 - 30 focus 10 second cool down Shoots a distraction, attracting the attention of all nearby monsters for 10 seconds.
http://www.wowhead.com/?spell=982 - 80 focus
http://www.wowhead.com/?spell=2974 - 30 focus and now has a 10% chance to immobilize the target
http://www.wowhead.com/?spell=1513 - 40 focus now instant cast 15 second cool down
http://www.wowhead.com/?spell=53339 - 30 focus and now knocks back the target if a 2h is equip
http://www.wowhead.com/?spell=2643 - 50 focus causes 60% weapon damage hitting 3 target
http://www.wowhead.com/?spell=34074 - The hunter takes on the aspect of the viper, causing ranged and melee attacks to regenerate focus but reducing your total damage done by 50%. In addition, you gain 4 focus every second focus gained is based on the speed of your ranged weapon. Requires a ranged weapon. Only one Aspect can be active at a time.
http://www.wowhead.com/?spell=48990 - 40 focus
http://www.wowhead.com/?spell=3043 - now goes with serpet sting(with a talent) and increases your chance to hit by 3%
http://www.wowhead.com/?spell=3045 - 0 focus and now allows you to auto attack while moving
http://www.wowhead.com/?spell=20900 - 55 focus now a 30% reduced healing (as i hope all of them will be)
http://www.wowhead.com/?spell=5384 - 40 focus i want this to be more fun id like some suggestions on it
http://www.wowhead.com/?spell=1543 - 40 focus 10 second cool down and a 15 yard radius but flickers every 2 seconds
http://www.wowhead.com/?spell=3034 - 45 focus now gives the hunter 6 focus a drain tick
http://www.wowhead.com/?spell=1510 - 75 focus
http://www.wowhead.com/?spell=20909 - 45 focus
http://www.wowhead.com/?spell=56641 - im not sure weather to make this cost focus or not. doubles focus regeneration while casting and refreshes the daze on the target and brings back the concussive shot cool down
http://www.wowhead.com/?spell=24132 - 30 focus now 2 minute cool down doesn't cause a dot but stings can tick and wont break it
http://www.wowhead.com/?spell=63668 - 60 focus also ignores 16% of your opponents armor
http://www.wowhead.com/?spell=19263 - 0 3 minute cooldown (decreased to 1.5 with talent)
http://www.wowhead.com/?spell=34026 - 30 focus
http://www.wowhead.com/?spell=34600 - spawns 6 snakes one with each poison and have their respected chances to proc (like rogue poison)
http://www.wowhead.com/?spell=34477 - 20 focus
http://www.wowhead.com/?spell=53351 - effect increased by your focus must have atleast 50 focus
http://www.wowhead.com/?spell=61846 - dodge starts at 8% (dodge increased by your agility)
http://www.wowhead.com/?spell=60052 - 55 focus
http://www.wowhead.com/?spell=53271 - 40 focus
http://www.wowhead.com/?spell=60192 - 50 focus no longer goes with traps and freezes the target in an ice block 1 minute cooldown (40 seconds with talent)
http://www.wowhead.com/?spell=23989 - now brings you to 100% of your focus (assuming they get 130 focus or something like rogues do with sets / spec / glyphs) and increases the effects of your aspects by 100% for 10 seconds 5 minute cooldown
http://www.wowhead.com/?spell=19577 - 40 focus now instantly stuns them like the 3.3 patch notes say
http://www.wowhead.com/?spell=19506 - now increases your chance to crit by 10% while standing still
http://www.wowhead.com/?spell=19574 - 50 focus
http://www.wowhead.com/?spell=34490 - 25 focus now interrupts the target for 5 seconds and silences them for 3 24 second cool down
http://www.wowhead.com/?spell=53209 - 60 focus restores 20 focus with viper sting
New Ability!
Snatching shot 45 focus pins the enemies main hand weapon to the ground behind him disarming him for 6 seconds