Given the 10% floor on consumer goods, I can find ways to mitigate the goods going to Denmark via other means that would normally be wasted.
billcorr said: The 100% research bonus helps with detecting submarines, too.
You could hypothetically merge plants, grab some radar modules, then LL NAVs to others. Or sell them.
Riga is a top priority to hold anyway. But I wonder if the effort is in any way worthwhile for the Soviets. Most sub attacks against them occur in areas light airframes can’t reach without being based in Allied territory. I don’t think that bonus would work on medium airframes.