I think its amazing that you have no idea what better alternatives exist. Lets go throught the feature list you
just mentioned: Flash
: Still very small compared to an SSD of the same price. Articulations
: Have you played or heard anything from EastWest Quantum Leap?? Arps
: Omnisphere has tons of arps that are easier to edit and expand Ableton-like sequencer
: There is NOTHING like Ableton's Live sequencer except the upcoming Bitwig, which was created by former Ableton engineers. If you've used Motif sequencer extensively enough, you'll notice it gets laggy when returning to the first count..especially for heavy sequences. Warm
: Matter of EQ and dynamics. I like to choose my particular warmth, rather than have the same feel for every track.
What about Omnisphere and Trilian??Have you heard Symphobia, AudioBro Strings, or Damage for Kontakt??. If the answer is no, you haven't done enough homework.
I'd also like to add that I owned every major keyboard/module: Yamaha W7, Motif (ES,XS,XF), Fantom (2080, 5080, FantomX), Korg Triton, Oasys
(still have), Kronos (returned that Sh*t).