That sounds reasonable.
One thing MB has going for it is viable Weapons Development. I remember thinking this was really cool when I first played in 1990, and the game just doesn’t feel whole without it…
Weapons Development is good in MB’s A&A. Especially late game when the board gets a bit stalemate-ish and progress slows right down. Even better if you use the optional rule that Japan starts with Super Subs, that’s one extra shot at HBs or IT.
1941 & 1942 have no Weapons development at all. Global Weapons Development is terrible - without Research Tokens it’s just a poor investment considering how useless the nerfed HB upgrade is.
AA50 was the last game to have Weapons Development worth spending IPCs on (although the HB nerf was a big hit).
Weapons Development aside, I’m sure you are dead on.
All this talk is sure getting me antsy to throw some dice!