[@Necroes] Ok, Some good questions here. Lets break this down point by point.

[quote=@Necroes]
Do we have to be orks? Could we instead be grots? [/quote]

For the time being i'll say ok. 

[quote=@Necroes] If so, do we have to be basic grots, or can we have special gear? Examples in order of potency: mortars, grot tanks, killa kans. [/quote]

Short answer is no, You can't have your own tank, killa kan, or mortar. The mortar is only used at a great distance and wouldn't be useful as I want to keep the group together as much as possible. It's the same problem with tanks and killa kanz. 

[quote=@Necroes] Would we be allowed to be stealth boyz? How about an odd boy? Loota? [/quote]

As I said in the OP, oddboyz are allowed to an extent. Painboy and mekboys are no problem. I don't have an issue with a loota boy and by stealth boy I assume you mean a kommado type. To that i'm also ok with as long as your sticking with the group and not always slinking off in different directions.

[quote=@Necroes] Orks come in a wide variety of shapes and sizes on the table top, but truth be told they're like most other races. Most variants of ork are just boyz with different varieties of shooty/stabby kit. So, what are we allowed in our selection of weapons/wargear?
[/quote]

I'm aware of the variety inherent to ork kit. Yes you can select your own wargear, I don't care if you have a choppa or a slasha, or a basha. Nor do I care if your shoota is single barrelled or double. Or if you run around with a rokkit launcha. You can customize the look of your equipment, no skin of my nose. 

However, if your thinking of taking a shokk attack gun, power claw, power stabba, extensive cybork parts, etc, than that is another matter entirely. Run those kinds of requests by me first.