What's missing is the ability of the performer to go into the editing capabilities of their instrument and tweak and edit or create a custom kit,
"EACH Individual drum part" in the kit they are using to make it sound the way it needs to be using all the tools, timber, resonance, key, dynamics, amplitude, release, cutoff, decay, attack, volume, course tune, fine tune, EQ, if they know how to do that, it's easily done on Roland, Korg, units
The drum editing on pa4x is out of this world... one of my favorite parts... espescially with converted styles/drums from other brands, or midi files converted to styles.. this allows you to get the drums right in a few easy steps..
Of course, we need the ability to have the drummer get out of time so the keyboard really sounds live.
Gary
This can also be done with round robbin technollogy where you can not only have variations in the samples chosen, but also a slight chang in the timing.. this is on board on every major sequencer/daw where its used not only for drums but for every track that needs some living up... its one setting of randomising with a single parameter to make it smaller or larger.. o clue why both these features are not part of arrangers yet
Altough for round robbin, you could need like 20 samples, where you now only need 1, so that would require 20 times the current sample memmory.. but since its mostly a drum thing, we could use the feature only for drum sounds..
But your random variation in timing would only cost minimal processing power.. its a real shame its not yet on current arrangers.
These 2 features together could do more for an arrnagers drum sounds then any audio drum could ever do.. the drummer in the video from logic x supports both features under its cover..