I've attached a screenshot of how easy it is to route Kontakt 7 (for example of a VST3) inside VE Pro 7 using Kushview Element.
You can Set the VE PRO Plugin MIDI In to whatever, and have --All-- midi channels, then have Kontakt 7 inside Kushview with a multi containing midi ins for all 16 channels if you like.
Couple of tricks - e.g. starting the standalone Kushview first to scan plugins and set Midi in/out preferences, then they're visible in the plugin version that you add to Ensemble Pro Server. But there are great (and short!) tutorial vids on youtube of Kushview routing and setup etc.
Hope this helps.