Do you mean converting the sys ex from the real Oberheim hardware for use in the corresponding software plugin?
Yes, being able to load Xpander or hardware Matrix 12 SysEx patches into Arturia Matrix 12, and even better being able to export patches <-- obviously that one would be harder since there's expanded modulation and an FX section, but it would be still possible to get all the original controller parameters sent via SysEx to the hardware.
this would be amazing on every level. I think that Arturia did a better job than usual with the Matrix 12. I've loaded factory patches to compare, and most of the differences could be chalked up to variations in hardware Xpanders more than them missing something. The emulations of hardware they make that do SysEx for patch saving would be wide open with the hardware if they did this.