@aombk HISE is really great for making instruments, which is what it's designed for. It also has some limited capability (which I haven't explored) for making effects but it's not really the best platform for that as that isn't its main focus. You'd probably have more luck with something like Cabbage, although as far as I know that doesn't provide a node based GUI.

You could write your own C++ module for HISE which would probably be better than writing your own effect from scratch in JUCE because you'd be able to take advantage of the things that are already part of HISE, such as the routing system and existing effects. You could also incorporate your module into the HISE source so that others could benefit from it and build upon/off it.

@aombk For some modules like envelopes, EQs, etc. you can add the built in modulators. If it doesn't have the option for using the built in one you either need to write your own module or modulate the parameters through scripting.