Droideka Omicron Question

Everything that is written in front of "While in Territory Wars and if all allies are Separatist Droids:" works in every game mode. Everything that is written after it only works in TW with all allies beeing Sep droids

awesome, thanks! How beneficial is that top half outside of TW?

For the top half you don't need to apply the omicron, it's already active with the zeta applied.
It's a good zeta and makes grievous teams better but not necessary for the team to be great.