Well I agree with you to a limited extent, but there are many facets of WW2 that the game doesn’t cover. Each person has his or her favorite aspect of the war, but I don’t think even Global is big enough for us to squeeze them all in.
I am really surprised you do not purchase lvl bmbs in your games. I find them very useful for 1 dollar more you get a unit with increased range and a guaranteed 4 on offense. Their only disadvantage is they cannot be squeezed onto a CV. The increased range is really the cherry on top. This lets you fight in one theater on one turn and be in another theater on the next turn. Italian bombers are golden, they can fight in africa and then land in Sitaly. They can also reach most of the Russian front from there, probably the power that can use bmb’s the best is Italy. Russia can use them too, if they intend to fight over sz 125 then the bmb will give them air cover for that sz. Germ and Japan have the same uses for bmbs, with the added benefit to Germany that should they need some additional firepower in Russia it will only take 1 round to bring aircraft from london/Gibraltar, where your bmbs should be threatening to keep US away from the Med. I also really like to purchase Japanese bmbs if I have been chased from sz6. These bmbs can still, fly out to shepherd the fleet to the Med, and then can be used in SBR raids in Europe.
I would suggest you try purchasing a few lvl bmbs next game but without the intention of SBRing. Only SBR when you cannot find a better target, which might be 1-2 rounds throughout the game. Pay attention to the options this purchase gives you of exerting offensive firepower many territories away either on land or at sea.