You've seen my other posts by now, I'm sure. But just in case, the quick version: I play WH40K. I have three sons who play (14, 12, and 10). Oldest plays Tyranids, I play Space Marines, younger one plays Tau. 12 year old plays Orks. Here's his list:
HQ
Warboss
Weirdboy
Elites
3 Meganobz (kind of custom-jobbies I bought on ebay - /wink)
7-10 nobz depending on how he arranges his boyz mobs
Troops
about 40 ork boyz available, including 3 or 4 big shootas
Fast Attack
3 Deffcoptas
He does pretty well with this list... when he gets good dice rolls or we get careless (like when I charge a mob of 13 ork boyz with 6 space marines - bad idea), but usually he places last in our tournaments and either squeaks out a win vs his brothers, or loses big.
For Christmas I got him 5 lootas/burnas (I'm going to encourage him to make lootas for the long-range shooty goodness), 10 Stormboyz, and the remnants of a Stormclaw set - 3 Killa Kanz, 5 more nobz, and two herds of gretchin. And I have a painboy and another Meganob I'll probably let him have later. From what I can tell, he really badly needs transports, like a Battlewagon or a Trukk, for the Meganobz, and maybe a Big Mek?
Obviously, we don't play competitively, so I'm not looking to completely revamp his army list, but I want to see him hold his own a little bit better in our family tournaments, so your suggestions are appreciated.