1. It is just an homage to Kong in Strangelove I think. It was in there to begin with.
2. I think there are D3-rolls... Can't recall where I saw it though. Will look into it.
Edit: I have and it was in 3rd ed. It is now 2D6 picking the lowest. Thanks.
3. Rapier is because it is not TLed, and has a lower rate of fire. It ha more punch but does not punch as well or as often.
4. Yes it is, but the limiting of having a Combat squad per Support squad means you can't just get 6 of them. At most you can get 3 but then you have to pay for 3 combat-squads as well. In testing it has worked out well, as it is really really hard to effectively use 10 of them alltogether. You block LOS, have trouble moving all to face one target and so on, or get mowed down really quickly. Yes, they have killed off groups of orks like nothing else, or get lost if they get two small blasts lobbed into them. They are a gamble. Yes, on paper it looks insane, but on the field the group works quite well.
And yes, the assaultsquad, again, is quite viscious, but if you want to have the full use of its potential you have to get a combatsquad as well, and in testing they have balanced out really well. I have one group with flamers and one with plasmas/meltas, and while they are dangersous they have yet to survive an entire game, as they don't have the stayingpower. At 12" (for full use of the plasma) they tend to get wiped out in the next turn.
5. Yes, once I get all my models painted I will get them all photographed and insert some stuff into the codex for them. As I am not done I have not taken any pictures yet. I am at about half-way now of 4k of the models I have. I just finished my squad of non-exo armoured hearthguard and their assault-vehicle Rhino.