That is oriented more on the live performance, than studio work. Kinda like IL Minihost Modular , but it would be loads better if you could have one midi keyboard zoned to multiple plugins ( based on velocity, zones, etc ). I usually work with 2 or 3 instances of Synth1 ( yeah i know, cheap ) and it would be nice if host could change patches on them all... kinda like mastermind foot controller.
Any ideas?

( because having a cheap laptop + a few instances of synth1 is way cheaper than having nord lead )

pd can certainly route key events through [notein] to control events with [ctlout]. a few [sel], [route] and [$1( should comprise the entirety of the patch. If you are running a linuxOS, there are alsa-midi patchbays in qjackctl and patchage that can handle the hard/soft ware routing.