Transferring from the CFU or CIU to the CSR and redeeming at 1.5 cpp is likely unprofitable for Chase, but any other redemption is likely profitable, so I personally am not worried too much about point combination being cut
Actually, I agree with this now. In the past, I felt the UR transfer partners offered a much better value, but recently I'm not so sure anymore. These days, it's a challenge to exceed 1.5 cpp equivalent with transfers, and the 1.5 redemption looks pretty attractive.