I think the skills could use some adjustements.
Balance allows you to stand up more quickly when knocked down. I think it should also help prevent falling as well.
Dipolmacy encorages your enemies to find targets other than yourself. I think this effect should apply to all enemies within 30 feet for 10 sec with a 15 sec cooldown.
Heal revives an unconscious companions to 1 Hp and also gives extra Hp to non Warforged players while resting. I think it would be great if you use heal on a conscious non Warforged player it could remove disease and poison and restores 10% of your Hp if it's lower than 10%.
Hide and Move Silently should be put together into a skill called Sneak. These skills are almost always together why not make them one? You can't use one as effectively without the other.
Spot and Listen should be put together into a skill called Detection. Spot is often chosen over listen b/c it allows you to see moving and still hidden targets and you see an outline. While Listen let you see red emission of where the target was moving and you can't see still hidden targets.
Intimidate allows you to draw the attention of your enemies. I think it be better if the effect reached 50 feet for 5 sec with a 10 sec cooldown.
Repair revives an unconscious Warfored companion to 1 Hp and gives warforged extra Hp while rest. I think a Repair skill should repair broken/damaged items and give 10% Hp to conscious Warforged with less than 10% Hp.
Tumble allow to roll a given distance. I think it should allow you to Flip and Somersault a given distance and jump off walls.
Use Magical Devices allow you to equipment you normally could not use and it modifier CHA. I think the modifier should be Wis and it should let you roll to use attribute runes.