I use trace dumps mostly to:

• generate stack traces, collapse them, generate performance flame graphs,
• debugging,
• research & discovery tool of how new code works.

While having xdebug.collect_params always on is sometimes useful, most of the time parameters are not necessary for my use. Parameters make the trace files much bigger and when greping them they clutter output. Parsing of the trace files might also require more memory and might be slower. Could you consider bringing back xdebug.collect_params setting?

I'm open to paying for implementation of this feature.