I always think back to how much time I invested (in my younger single, childless days) in the Civ 2 WW2 Scenario and just wish that that scenario could have been as good/realistic/interesting to play as WW2 Global.
I do like to tinker in the editor, as I like to spend a great deal of time developing my nation. I have played USA (being on a different continent is a bit of a slow burner), Soviets (takes a while to get built up and with such a border, inevitably get stuck fighting on every front), but mainly Germany.
EDITOR TWEAKS I USE:
I tend to remove Germany from an alliance, which allows me to pick and choose when to start wars or call for peace. It gives the ability for Germany to take all of continental europe, as well as not being subject to helping Japan.
Make a few wonders unit producing, I mainly do so for UK as their empire is so strung out, they tend to only be strong in the homeland.
Add a few fortresses to the eastern border, to dissaude Soviets from attacking too early.
(The last time I played I put all of the South American countries in the Axis and gave the USA a ton of units in SAmerica. Not only did they not raze any cities, but it made them more powerful and removed some of the minor civs right off the bat. It did result in UK/USA going for and knocking Japan off the Asian continent quickly, but I'm starting to run into the (65%land60%population) loss time, so I'll have to move into Africa sooner than I'd hoped to land grab back)
But the editor tweaking is only a "wee" branch of the tree you created. Thank you again!