10. I can't aim worth a darn
Practice. 
9. Is everyone wearing body armor? Fun game but with some horrific hit point flaws (if the game is supposed to be realistic with complete with historically accurate weapons why do I have to shoot someone 10 times in the skull with an automatic weapon, 2 times with a rifle, or a full clip in the chest to score a kill; please give us a balance here)
It wouldnt be fun if you died extremely quickly, I think its alright...
8. Life recovery length stinks, it's just too short (just run baby run, being able to recover is good but shouldn't the effect of bullets ripping out your heart last more than 3 seconds)
Agreed, the regeneration means its hard to kill people if you get them down to low health, then they hide behind something for like two seconds and they're back to full health. Ugh.
7. Unless skilled with a sniper rifle, distance shots are a waste of time and ammo.
Meh, Ive killed people from a distance with my StG44 multiple times. Just use the zoom thingy with the A button.
6. The kill zone for a grenade is only about 4 feet, they just piss everyone off
Ugh, I always get killed by grenades
5. I haven't found anyone who is invincible but some online players do seem to have much more abundant life; just an observation. Cheaters? I don't know. Time will tell.
Theres invincible people, and a lot of people who are insanely good. Its usually easy to tell apart.
4. Organizing a solid assault or group advancement in TDM or CTF is difficult due to limited communication.
OMG, this pisses me off the most, the communication in this game is awful.
3. Scenarios which limit you to rifles seem to somewhat balance the game's hit point flaws (see #9)
Well, I hate the rifles, so I have nothing to say.
2. Did I mention I can't aim worth a darn
Yup.
1. Good game but catch myself dreaming of what this game could have been
Yeah, me too...*sigh*
What's your pros and cons?