Great guide! I thought I'd answer some of the things you needed answering, and maybe give insight into a few things you may not have known about.
Medic: You don't bleed out from crippling, but you can heal it. Hold F if you have medic perk to revive yourself. You will lose the perk once you self revive, but hey...you are still alive!
Hustle: 20% speed boost in all stances. Great for squad teams.
Battle Hardened: Reduces flashbang blindness also.
Hunter: Obscurity do not die from bleeding, but the more they move the longer they bleed for.
Hallucinate: They hear random stabbing near them which is the main trigger. There are false obs that can be seen, I have seen the effect when testing but not ingame. Either way, the stabbing sound triggers that one guy to go crazy most times. Shoot a guy, sit back and watch him go crazy once a fake stab goes off. We plan on improving this firemode soon, but it does work pretty well at the moment to the unaccustomed.
Obs Nades (I like to call em Bubble nades lol): Also good for clearing an area of explosives.
Stick to walls: While stuck to a wall you can use any of the firemodes excluding swap. (Try using pull/magnet on a guy while you are stuck to the roof). You can also throw your grenades, and possess from a wall. Holding F while stuck to a wall will make you drop, whilst tapping F will make you leap off.
Possess: You get 30 seconds to wreak havoc (server setting). Once the body takes enough damage you get ejected from it, but you don't necessarily die. You may also decide to leave a body whenever you want by holding F for a second or two.
I'll sticky this guide once you are happy with it. You may like to add stuff about squads and how they work before then.