Has there been any thought to have a master module behave as a slave module?

I have a few customers tat build equipment with the IQAN system as the main controller.  They are currently using the MD4 or MD4 as the head master and multiple XA2 modules as the slave units.  They want to use the MC43 modules to replace the XA2 modules so simplify the system, but when doing so, have had issues with making the MC43 modules as optional.  The XA2 modules were on specific attachments that were connected to the main system and then configured as being present and then thus enabled in the application.  If the XA2 needed to be replace, there was no need to worry about any software or firmware to be loaded onto teh XA2 module to get it to work in the application.

Now with all that being said, the MC43 modules used on the attachments present a problem if they were programmed with a different application or firmware when initially set up.  The OEM cannot simply send out a replacement MC43 reflashed with a base attachment application and have the end user plug it in and have it work.