No other solid-nose plane in this game has formations. I think the formations exist only on the -25C because of the glass nose variant, which has a bombsight.
You might as well have A-20Gs fly formations with a Boston III and drop when it drops. It's not going to land where you want.
Also, the A-20G, the Mossie, the B-25H, none of these have formations.
Specifically I was thinking about a bomber that could also carry troops. You can't have a formation of troops. Hitech has said something along the lines of "we could enable formations on troops, but we'd just up the capture settings to require a full formation" -- so any new troop carrying craft must carry only as many troops as the c-47 does now, for gameplay considerations.
That's what I was thinking about.