IDK if it can be workable.
All this discussion makes me thing about a kind of more or less powers according to the number of players.
There is still a minimum number of 5 power (as 1942.2): US+China / Russia/ UK (Euro+Pac+ANZAC+Canada)(+France outside Europe and North Africa) / Germany+Italy+Vichy (Europe+North Africa) / Japan
2 Axis player: (Germany & Italy merged) and Japan
3 Axis player : G, Italy, Japan
3 Allies player or less: UK, USA+China, Russia
If we start with UK, it allows to merge Italy and Germany more easily than if Germany play first, then Allies, then Italy.
The idea is to create a 1942.2 kind of setup at the Global scale.
It is a way to limit time consuming purchase decision, collecting IPCs and special turn for minor power if not needed.
When more players available, above 5, you can continue to allocate all specific unit and make a minor power until all players have 1 power to deal with:
6- you may split Italy from Germany (3 Axis vs 3 Allies) or UK PAC from UK Europe (2 Axis vs 4 Allies),
7- you split both (3 Axis vs 4 Allies)
8- you may either separate ANZAC from UKPac or Canada from UKEurope. (3 Axis vs 5 Allies)
9- both ANZAC and Canada (3 Axis vs 6 Allies)
3 Axis power
Allies: Russia, USA+China, Canada, ANZAC, UK Pac, UK Euro (French african TTs except North Africa),
It makes room for up to 9 players, or 10 if you split China.
And China can be given to a player playing either ANZAC only or Canada only. That way, it makes more action.
For minor powers zone of influence can be restricted, you can decide that at most 20 or 25 IPCs can be built from Italian (as German), UKPac (as UK), ANZAC (as UK), Canada (as UK) IC. And main IC from UK has a caps of 40 or 50 IPCs.