Well, as someone who almost never SBRs, my latest game saw me doing it quite a bit with the Japanese. As the 100% US pacific strategy washed over the home islands my Japanese fleet fled before them, being shepherded by 3 lvl bmbs and a small army. In combat in the indian ocean the army was attacked by UK mobile elements out of India after a US can opener on WIndia. With the Japanese army dead, no incoming IPCs because of US subs, and the final Japanese redoubt in China holding out until eventual elimination I needed something for them to do to impact the game.
The lvl bmb back on Japan hit US Korea every round and my other bmbs hit some Russian factories in Stalingrad/ukraine. These raids were effective because the Russians do not have the ftrs available to defend all their factories from SBR, and America did not want to leave ftrs in Korea when the fight was near moscow and persia. I also occasionally used Japanese based aircraft to clear US ground units out of Korea, keeping them from moving through Siberia to hit the axis flank.
My point being that SBRs are now just a bit more situational. You’re not going to be able to bomb the daylights out of a powerful nation with a large airforce, but you might find opportunity along the way anyways.