This model is an enhancement on a model that was out for quite a while with lots of improvements over time.
It has some very basic limitations in the hardware, memory capacity, and other areas that are holdover from the XT and T models, which are now discontinued.
The 996 p2 was built as the poor man's solution to getting to phase 2 digital, where the old XT model was given a small bit of additional life at little additional manufacturing cost.
It does not have the hardware or memory capability to do what the SD card scanners can. The addition of DMR, if it were physically possible, would cost some additional amount for the license.
The x36 radios were put out to be able to handle these new formats, and I don't think Uniden is going to compete against the x36 radios with the 996p2.