If charge distance is 2d6", that averages a longer charge range than the 6", and sometimes gives you the chance to randomly charge someone from way outside normal charge. I'm not so sure that overall it hurts more than it helps.
Also, something good for Orks: This "you can fire your weapons at BS1 in response to a charge" is better for Orks than for anyone else. THey are only BS2 as it is. Imagine trying to charge a unit of 15 lootas. If they roll a "3" you're going to get hit with 8 or 9 strength 7 shots on the way in. Now imagine trying to charge a unit of Burna Boyz (shudder).
I'm kinda concerned about the new psychic powers because it will probably make psykers and psychic defense more important. And in my 4 armies I have nary a psyker between them. But without knowing the whole rules it's not worth worrying about yet.
Statistically the number you should see most is 7 on 2d6, but being 4 inches away and rolling a 3 is still going to suck. If ally this randomness is all that great, why don't they stick a random range on Spess Marine/Tau/IG guns? If I have to guess on can I make a charge, why not have the shooty guys have to take a chance on shooting?
I don't think the defensive fire is really going to help Orks all that much. The game right now for Orks isn't sit back and shoot, but maybe that is going to change. As for the Burna Boyz, I heard somewhere that template weapons will not be able to defensive fire. Which I hope to God is true since Boyz can no longer take Burnas in a mob, but Spess Marines can.
I am with you on Psykers. Being a race without one (WeirdBoyz do not count, espeically since we didn't get any of the new nifty powers) that could really suck.
Truthfully, one of the things that worries me most is sniper fire. Hey, I can target all your PK nobz (of Big Mek with KFF) and completely destroy the effectiveness of your army. And of course it is another rule that Orks cannot use.
I am still waiting to hear any rule that really benefits the Assault based Xenos crowd. Everything that I am hearing is great for shooty people and Marines. I guess they could FAQ the Ork codex and cut the point value of everything in half, but given what I have seen out of GW, I am sure that they will double the values instead. It is almost like GW wants me to go to that other game and play with the shiny Trolls.