Good luck Kortes! Although incredibly rare, I've heard of a couple fellows specializing in pulm-crit AND rheum because they are just so interested in that intersection of diseases. I could never do that myself-- it's obviously a long journey and I don't know what that translates into job prospects (probably a specialized field in academia I'm guessing). You'll definitely make more money in pulm-crit, but that's not really a reason why most people choose rheum anyway. I've also worked a lot with several ILD physicians on CTD-related diseases (RA, systemic sclerosis, dermatomyositis, Sjogren's, etc.) who are very comfortable managing immunosuppression for those patients, so if you choose pulm-crit that's another option down the line if you want some rheum-related options.