Ok why are there different variations on the look of the Omega Set and why can we not choose the look we want.

For example i have the full omega XII (season 6) set and i've got very small shoulder armour pads and genades only down on 1 side, but i've seen people with grenades on both sides of the chest and have really big shoulder armour pads.

Have you gotten all the optionals for all the ground missions? That unlocks additional stuff.

Optional stuff? not sure what you mean, I thought there was only the 3 set shield/armour/weapon.
I've been in the tailor options and I dont get to chose different style, onlt on or off.

Getting all optionals on all the elite stfs unlocked a 2nd outfit for all STF costumes, MACO, KHG and Omega.

Sadly now though, as well as needing those optionals, you also need to buy the costume unlocks from the rep store.

You mean I need to meet both the optionals AND unlock the costume set? Nuts.

Is there an accolade I can track that with?

M.A.C.O. Team Commander or Honor Guard Commander on an KDF character. Once you get that and 3 parts of an Omega MK XII set it will also grant the Omega Shadow Force Operative accolade and title.

Thanks for the info