Great render. I have had a look at the formula. It seems like juliasets are available from the main set. Increasing the real number of the variable will make the mandelbrot set smaller because values are more likely to escape. Adding that to the z^4 will cause juliasets to appear. The larger the real part, the smaller and "cleaner" the juliasets are.

The real part in- or decreases the size of the sets while the imaginary part rotates parts.

Wait, does that mean the A variable can be eliminated? This will make the number of possible sets so much larger. This is amazing, thank you!

Edit: I see that the variable just changes the critical point. I see the positive versions (f(z)=z^2+z^n+c) can be changed to get the negative (f(z)=z^2-z^n+c) versions.