Well I guess coming form other systems I don't really have much to complain about.
I at first was all for object oriented MIDI, but now all I would like is to do my own phrase parsing, I actually kind of appreciate that a single track gets a single color now. I'm being converted slowly to DP's 'way'.
Mute MIDI notes is a nice feature for getting you to think outside of your usual way of playing, by eliminating notes super quickly, but it's by no means a deal killer. Same with being able to restrain the MIDI top and bottom notes. Mostly I came back to DP because it's writing process is strangely similar to Live, in that you can use Chunks to think of a song in terms of parts and rearrange on the fly to make major changes to a sequence right at the end with little or no stress involved.
I will say that I often think of using DP live, but I would rather not have to rely on my controller keyboard to split MIDI notes, since for each song in a set you very possibly would want different splits, and it starts to become complicated. Live is meant to be used live, but in some way Chunks are far superior to having to mute instruments to save CPU etc. and open new Live sets.
It's really too bad NI quit development of Kore because it's pretty dammed perfect in a V-Rack as a meta instrument with AU's and splits etc.
M2 Studio Ultra, RME Babyface FS, Slate Raven Mti2, NI SL88 MKII, Linnstrument, MPC Live II, Launchpad MK3. Hundreds of plug ins.