Question Made distance fade + dissolve shader. Cannot get proper burning edge

Hi everyone.


1. My scene needs some distance depth. It looked totally good in linear fog.
2. but am not allowed to use fog in my scene
3. Still needed the depth in the scene. Tried to combine distance fade (distance color transition) + world dissolve in shadergraph
4. Tricky part 1. did not show such desired effect on world dissolve. It starts dissolving from any place not from far distance. -> reduced the simple noise scale under0.1, no dissolves from close area.
5. Tricky part 2. Cannot set the width of the burning edge properly. the current value is a bit weird like -9.5 huh?
6. However, seems it could work? (dissolving world from distnace) but cannot have such burning- animated edge for dissolve as I minimized the noise scale neither make them animated. further, distanace sometimes color fade works the other way around lol

Here is my node I would be more than happy with any input from you