Well, with all the new generation engines around/coming up like the Merlin 170, JC Mammoth and reworked Behotec 180, I believe that they will have to do something.
However, a SX version of the 180 will need a lot re-designing to come up with a lighter engine. It would have to be significantly smaller than the current 180.
A completely redesigned compressor would certainly achieve this goal...