Ryan, if you are planning to do any live - mobile sets then the X is not the best option to replace the OT.
The only time I would consider the MPC is to replace the DAW component in the setup, possibly the OT component, but I am focused on the mobile-live capability as part of my setup.
Currently my dark trinity linked with a suitable DAW covers all bases. For example, build tracks for live use in Elektron. Migrate them to DAW and polish them for production songs.
Also use the DAW to produce stems to migrate back out to OT.
Now i just need to learn how to do all this