For anyone who started a plugin and never shipped it — where did it actually die?

[Zeisner]

I didn't have the time (to learn to write efficient code) nor the money (to hire an experienced programmer) to break the FlowStone prototype barrier. It's not a big deal though because the majority of those plugins belong inside the unholy plugin triangle (Missing link/a plugin to rule them all/technical case study). I would have had a userbase of maybe three people at best. Or do you want a (optionally mono-compatible) panner with adjustable ILD:ITD ratio, with both ILD and ITD matching to maintain the perceived pan position regardless of the chosen ratio, switchable to balance or stereo rotation mode? Of course not.

[NAD]

Or do you want a (optionally mono-compatible) panner with adjustable ILD:ITD ratio, with both ILD and ITD matching to maintain the perceived pan position regardless of the chosen ratio, switchable to balance or stereo rotation mode?

That sounds similar to Goodhertz Panpot. How could you make it mono-compatible though?