I think it's time for pets to evolve in Guild Wars, the following is a small project I have been working on. I'm sure some will agree. They have added a minion to game which causes bleeding (Jagged Horror) So I feel it long past due to give pets the respect they have earned.
I will name off pets then their ability that I think would be effective.
Core
Black Widow……….....Poisoned
Tyria
Black bears ........... Knock down
Wolves ................ Crippling
Lynx…………….....…...Bleeding
Melandru’s Stalker….Bleeding
Strider/Moa bird……..Blinded
Warthog…………….... Dazed
Dune Lizard……...……Diseased
Cantha
Tiger/White tiger……Bleeding
Lurker/Reef Lurker…Crippled
Crane………………......Blinded
Black Moa………....….Blinded
Phoenix…………....…..Set on fire/dazed
Elona
Flamingo……….….Blinded
Crocodile………..…Knockdown
Lion/Lioness………Bleeding
Jahai Rat…………. Diseased
Hyena………….…..Crippled
Warthog……….…..dazed
The skill should be a 5-20% chance Depending on level.
Duration should depend on level as well.
Also I would like this to lead to having the tamer having more of a role in the game.
1. Stable:
This feature could give us the option of having more than one pet. I would say charge us for changing pets. According to the length of time that they have been stabled. This would stop some players from having all the pets in game!
2. Training:
Being able to pay for special earned skills to match the condition of the pet , at certain levels. Bring better meaning to elder/dire/hearty. (This would mean not being able to cap elders/dire/hearty) When your pet achieves this status give him a elder/dire/hearty armor or new look so that he may stand out and recognized.(maybe a weapon to add to damage) Also with each level they gain (until 20) you must pay to train your pet so that the duration and percentage of conditions are raised. (20%being max)
3. Selling collars.
Collars can be runes for pets:
Duration: Lengthen the duration time on conditions.
Percentage: Raise the percentage of success per hit for conditions.
Protection: Armor against elemental damage.
Endurance: Armor against attacks
Vigor: Health
4. Common foods.
Certain foods could help your pet in battle. Which will only be held and activated from a pet sack.(which you will have to buy from tamer)
Ex. Charr heart could add to the attack damage for a certain time duration.
Mursatt bone could bring health regeneration for a time duration.
(this idea came from Night Fall/Drake ka bobs/Skale fin soup/iboga salad)-not sure of spelling

Well hope you have enjoyed reading the thread. Please feel free to list all and any ideas/comments!
Edited added dazed to the conditions

Member Ideas
Morrin: I would also add that for some of the bigger creatures I would like to see armor. Even if it was just a skin to match your characters armor. It would give all creatures a different appearence, and, I think, make them a little more unique.
I say bigger creatures becuase I think it would be easier to adapt armor to say wolf/tiger/bear than it would be to spider/crab.
Tarek Amandi: Maybe even a diffrent color(aura).