That last idea you just about the universal scramble is really interesting. I would definitely be down to explore that as an HR tech toggle add.
I think everything NO related mentioned above is totally doable.
From the top list A2/D2 is already an option, as well as the Soviet NO, and the Marines. They were at 1/1 3 initially (I think those initial stats were based on a unit that transports normally) but I think there was a concern about them being OP with warship transport, so I agree that 4 would be ideal. We already have a couple 5 spot units on offer in the expanded roster option like the C5 bomber, C5 destroyer (can evade), and the C5 Mobile Artillery unit, each of which I think are rather more compelling at purchase than marines, which would probably recommend the 4 spot so marines are not in direct competition with these but rather the standard artillery unit. Personally I think it would be ideal to have everything in the BM mod in the standard package, so that its easy to just turn off or modify individual options. Not sure how far along we are with the integration there, but that would be my thought for maximum adaptability.
I still like all the ideas listed for “add” especially the convoy zone in sz5 and the possibility of Canada, and option to up damage bases.
Speaking of Bases, I proposed the following just now.
I think each of these has historical merit and would connect the game map in interesting ways.
Scotland (Scapa Flow) NB
French West Africa (Dakar) NB
Central America (Panama) NB
Amur (Vladivostok) NB
West India (Bombay) NB
Alaska (Fairbanks) AB
Yakut (Krasnoyarsk) AB
Newfoundland (Gander/Goose) AB
Sierra Leone (Freetown) AB
Malta (Luqa) AB
Each AB addition is basically designed to facilitate transits across regions of the board that are otherwise under-served.
Alaska connects to Yakut along the ALSIB Northern Trace, which in turn connects to Moscow.
Newfoundland connects to England one move along the North Atlantic Ferry Route (and also can reach Alaska for a transition to/from the North Pacific)
England connects to Sierra Leone along the West African Reinforcement Route WARR, which in turn reaches Cairo or Malta in one move.
Same deal with the NBs, each is aimed at connecting the map in more interesting ways. Veers proposed earlier that West Indies might serve rather than Panama, I would keep this in the back pocket if the Central America NB proves OP, but for now I think I like it better, since it services both theaters and makes that TT more attractive for either side. Right now I have a total of 10 on the list. They are all Allied, so you could call it “Allied Base expansion” or whatever.
These would be strictly optional add ons, as part of a package, but of course could be easily edited out, if one proves lame. Right now I like them all for historical interest. Might even raise the list a dozen, if there are a few more that make a lot of sense. Perhaps one in each category NB/AB. I see this as more a historical interest feature, than a balance corrective. Meaning it would probably require other things to sustain it on balance. But I really just want Scapa Flow, and if we go there, might as well toss in a few more.
:-D