Control groups

[P O P]

Don't get the point of having a 3rd one via control pack. I always just have a work one and alternate the 2nd one between dormant charging and active charging depending on if I need to charge my workers or keep my military bots on stand-by.

[Garatgh Deloi]

Just wait until have have a full set of control sublinks (for the work speed boost) and have like 9 control groups.

To be honest i don't see the need for more then a few control groups either.

[Similar]

It's been so long since I've played without the Work Modes mod that I don't remember how vanilla works, but I do find it useful to have my paramedic in a group by itself so it doesn't get affected by orders to the other mechs, and to have utility mechs I take with me on caravans in a group by themselves (I always leave some behind to take care of the base while I'm away), and then a group or two for combat mechs so I can order them separately (sometimes I have them set up for ambushes or to activate when there are enemies in a specific zone, so extra groups are useful, and necessary, there too).
But yeh, I still do always end up with far more control groups than I have a use for.

[XelNigma]

For the most part you only need 2. but there are cases for more and maybe they where future proofing the grounds for modders.

A few cases for more groups would be a dormant group for workers with no jobs, like miners or builders when theres nothing left.

A medical group for you enable/disable when needed.

If your mechanist is also the tamer, he could use some scyther body guards when out taming animals but the entire combat force would be overkill.

or it could be just to quickly select preorganized groups. If you want a ranged and melee group. or if you want equal mechs on two sides of a T section you use for defense.

and like I said, could been for modders. There is a companion sphere that gives a buff to people its around, its pretty good to have set to follow all the time while everything else is dormant or working.

[MadArtillery]

I like 1 for workers, 1 for military, and 1 for the tunneller. You need so many control sublinks for work speed it's a bit ridiculous having so many control groups.

[Yaka]

Separating fast and slow mech for combat is quite nice as well.