Dakka orks

I'm really wanting to start playing my orks again in 6th. Here is a 1500 point dakka list I've been thinking of; It's been a long time sine I've played orks and not at all in 6th so any feedback is good.

HQ
Big Mek: Burna, KFF, 'Eavy Armour, Cybork Body

Elites
Mega Nobzx3
- Battle Wagon Transport: Deff Rolla, Red Paint, Boarding Plank, Armour Plates
Lootasx12

Lootasx12: Mekboy

Troops

Shoota Boyzx30: Nob w/powerklaw, eavy armour

Shoota Boyzx30: Nob w/powerklaw, eavy armour

Heavy

Battlewagon: Killkannon, Kannon

Fast Attack

Dakkajet: Extra shoota, Ace

Aegis Defence Line

I know I should really switch out the Big Mek for a Warboss. It would add powerfull close combat to my army and make the Mega Nobz scoring and be cheaper, but I really like my Big Mek.

My brother plays orks, and at least in 5th, hated the mekboys... He just ran Lootas by themselves because most often the mekboys didnt do anything and just ate points.

Tough to win games with 2 troops choices in 6th.

I'd swap the Big Mek for a Warboss, then the MegaNobz become scoring.

If you trim some points here and there (armour plates, boarding plank, maybe some other things ...) You can drop 40pts on an MSU unit of grots that you can put in reserve and score a backfield objective.

Having a Mekboy in with your lootas is... not horrible. Problem is, you need to either give him a Rokkit Launcha or Big Shoota to make him not suck, otherwise he'll just kill himself. It's nice to have a non-loota there to take the first hit, or a schmoe in the unit that can accept a challenge.