Hi and thanks for the question.
We have such support for JAX-RS, which you probably don't use, but you can look at the related code to get a sense of how you can add a generic framework support through an instrumentation plugin.
Otherwise, you can adjust the code that relies on the url_groups setting as you please.
And if you really feel bold, I played some time ago with a learning algorithm that analyses URLs as they arrive to find dynamic parts and substitute them. If you already try to play with our source code, you may try and incorporate that, see if it works for you.
I hope this helps.