MIDI CC is fine, but adding a slider too couldn’t hurt if it’s not too much work. 
The BeatSlaughter mods added
1 Velocity sensitivity
2 Polyphony
3 Panners on each out
4 Added a flat out (Pre EQ) for four stereo outs
Once i decide what the next type of sound to create for the new challenge we will get it started
Bungle
So you did mean xrns rather than xrni? That’s what was causing me confusion in the past. Will try and have a play for the next round 
OK i will try to make it even clearer next time
You post an XRNS but the idea is to create an instrument that can be rendered as an XRNI
So that would be XRNI competition
But you have to post the XRNS so that the XRNI can be rendered from it and everybody can see that you have only used the synth and native plugins
Then we can render an XRNI for others to use
Bungle