A useful and interesting observation. It’s definitely a trend for Behringer, they are moving very much to putting original new features together with the flavors and technologies of the originals.
In the LM Drum case, adding the sample capture and loading features is a good example of bringing along useful changes.
Another is the atrophy settings with the UB-Xa. They started on that route, perhaps in reaction to the modern Oberheims, but it got to be a whole thing for them, so in the latest release they allow you to save the atrophy settings with the patch, opening new directions with the sound design. It looks like they will add similar ideas to some of there other high end synth releases going forward.
The other thing with the UB-Xa is the poly-aftertouch. That started because they were working on a CS-80, ( the so called VS-80 ) and so once they had the p-at keybed ( done inexpensively with good quality, and modular ) no sense not adding that on to other high end synths. So you’ll see that enhancement showing up with more synths, as enhancement to the original.
And with the VS-80 it looks like they may break from the original, and change the interface with a mod-matrix. ( They also will likely have the atrophy feature there too. )
Whether the screen on the LM Drum fits in with these sorts of good enhancements, or is more of a side distraction, we have yet to see. The nice thing about screen graphics, is they can be relatively easily changed with a new firmware release.