Improvements to the firmware was one of the key reasons that led me to choose a Synology product.
I understand your comments as follows:
However, please note that this decision to discontinue firmware support x06 models was made over a year ago, as we are moving forward. While some have stated that recompiling is a simple task, it is not, and requires the resources of our development team, and further testing with an aging system where it's resources are limited, and our development team resources are limited. There is other likely reasons besides recompiling which is why firmware support for x06 models has been discontinued, much like firmware supported was discontinued for the DS-101g+, where the firmware would exceed the hardware abilities of the DS-101g+.
But I do feel that the 106J is still a current product (I have owned mine for less than 2 years) and is worthy of further firmware development alongside some of the newer (and more expensive) models.
Very disappointed UK Synology customer