Tested a planet with a lot of various pop types to see how they scale and sort:https://www.dropbox.com/s/iqwo3o71dxciphg/Multikulti.png?dl=0
The above unit count could be ideally positioned in two rows
Recommend the scaling to use a rectangular mapping if even number of species are present and to only enlarge the first pop when odd number
Exceptions can be if only 1-3 unit types are present: in this case a simple line formation would do
Another helpful method would be to enable scrolling, in case there are more then 10 unit types present
Sizing= Max planet pop count (32 is the largest I have seen so far)*2(rebellious pop variant)+2(marauder raiders and tanks)
This number will increase if new ground unit types are introduced
Also consider spacing between the individual unit types so there is enough space if they have over 10'000'000 popedited by sven: Thanks for doing these tests. These pop icon display rules could clearly use an overhaul.