So, how is it ideal? I do it like this and I have no idea if it is optimal.
1 main army
2 broods + corruptors
3 infestors OR vipers (never both of them on 3)
4 creep queens
5 hatches
6 overseers
Now, what to do if you want to add a couple of infestors/ vipers? Or lurkers.
from your setup i’d suggest add them aswell to 3 since you will not having inf. vipers and lurker walking direct into enemy line
or repelace the creep queens with them, at certain points since you have enough creep
I usually put vipers and corruptors on the same hot key. If I’m using infestors and vipers then I usually will put one of them on follow with my army.
There’s no optimal way of doing it. Whichever way works best for you.
I’m thinking you could replace the overseer with the second caster and either spread them to the other control groups or have them follow the other units. Having a separate control group for them only helps when scouting, which is before you get to having a second caster.
(Left handed by the way and a piano player, I reach 1-4 with my whole hand, 5 to 7 with my last two fingers, 8-0 I need to consciously move my hand slightly)
I like inject queens on 5 and hatcheries on 6. That way, come later game (or a situation where I don’t have time to use camera position hotkeys to inject, as I need to keep focused somewhere else) I can click 5, shift+e then alternate clicks in the center fo the screen and space bar (shifts between bases) to instantly inject my hatheries extremely fast, then double tap an army control group and there, back to the army.
That leaves 4 numbers for army control. 1 and 2 for main army groups, 3 and 4 for spellcasters and support and you keep adding things on the march and changing things as you need. For example, early game lingbane on 1, banes on 2. Hydras added later on 3 and 1, lurkers on 4, and it keeps going. Late game for example corruptor broodlord on 1, broodlords alone on 2 (to pull them back, micro them, whatever), vipers on 3, infestors on 4.
Finally, I like to hotkey creeping queens on 7, and shift queens from 5 and 7 with stealing units from control groups as needed depending if for example I need my queens as a block to defend an all in or similar. On the far away keys 8-0 I like to hotkey random stuff like my first ovies (to scout), overseers to scout, runby units, whatever needs a hotkey but doesn’t need a “I need you controlled right now” response usually.
Anyway, test stuff and find something that works for you. Then stick to it. It sounds complicated until you get hte muscle memory going and then it keeps getting easier.
When I’m playing zerg:
1: Hatcheries
2: Queens
3: Early game; scouts faster units
Later, flying units / casters
4: main army
5: army split for flanks or surround, or siege units
6: tech buildings / upgrades
7: control group steal
Like Stretch says, vipers go well in the same control group as corrupters. I’d have broods in a separate control group and then corrupter group follow a broodlord and split off when needed. Infestors would get their own control group. My advice would be to avoid making both casters just to keep unit control simple. Maybe lose the overseer hotkey if you want both, I eventually make a couple overseers to group with my main army and a couple to group with the corrupters, just have the army ones follow a unit after attacking.