The new MPC X limited edition is the total opposite of what I’d want in a new MPC.
Bring back a truly sample-focused, small/portable MPC!
Focus on samples, sampled keygroups, pitch/filter/amp envelopes, LFOs. Streamline the effects by including only some nice effects: a proper, good reverb, delay, one streamlined distortion effect rather than 8 of them, bitcrusher/lofi, drive/saturation, chorus/flanger, a consolidated mixing effect (eq, comp, hp/lp filters in one streamlined interface). No need for 50+ effects all over the place with inconsistent interfaces and overlap, just the essential ones arranged logically.
Add a granular synth engine - i.e. again, this is a sampler, so focus on that. No other soft synths are needed so throw all the others out (Hype, TubeSynth, Solina, etc).
Add a built-in mic. Make it truly small and portable, battery and usb-c powered. User-replaceable Li-ion battery please.
Then get rid of all the unnecessary stuff to make it more of a focused sampler and sequencer and much less of a DAW: strip out the looper, the clunky interface, the audio tracks, the messy mixing interface with buses, tracks, masters, etc all in separate places (just 2-3 inserts per program and 1-2 inserts per pad is more than enough). This should mean a slower/cheaper CPU can be used and less RAM is needed.
No need for serious finger drumming so miniaturize those pads down beyond SP-404 MKII size. Remove silly integrations like Splice. Miniaturize the I/O: usb-c, 3.5mm stereo in and out, midi in/out and a micro SD slot - all at the top of the device. Obviously reduce the screen size. Ideally still a touch screen because I don’t know how they’d make the sequencer easily editable otherwise, but maybe they could figure something out.
Basically an MPC without the DAW-in-a-box feel, about the size of a Polyend Tracker Mini or slightly larger like a Smpltrek.