Tomas Slancik

I'm all for approximation, many renderers have dedicated caustic samplers, which can produce very fast and sharp caustics

Karma shouldn't be the odd one out

Unbiased or physical should not even be a part of the argument as Karma is not aiming to be 100% physical (or if it does it's far from it still)
For that sake approximate caustics are more realistic than no caustics or faux caustics

Ivan L
And you just came here to say "That sounds completely unrelated" without bringing any new info to the topic.

Sorry to not be clear
By unrelated I meant relating the need or no-need for visualization of a node having expression/keyframe driven parameters to any sort of HDA workflow or parameter organization

Scene is rarely encapsulated as a single HDA

You may have several HDAs feeding into another etc.

Its always nice to see if any of them have keyframed animation or whether the time dependence is inherited from upstream or potentially introduced internally

I personally use certain color to mark my nodes with manual keyframes to at glance see them, a lot of them are already complex HDAs, so I fully see the OPs point

A lot of times you may end up digging through someone elses scene and you need to be able to do such detective work regardless