One thing about translating NA’s from AA50 would be Italy. Without Italy, the NA’s would be in favor of Allies.
If you want to play AA50, use the AA 1942 pieces and IL’s big AA 50 map and download the rules from WotC/AH website.
Not sure about the techs. Paratrooper would wreck havoc as the board is smaller than AA50 and LRA and paratrooper would allow you to reach almost any territory possible.
As for being bland, I would have to disagree, AA 1942 (AAR with AA50 rules) allows for different strategies, (not sure about a bid as it’s still new and people haven’t had enough time to play with it.
Play with it first before modifying.
Good gaming.