Sorting LiteLLM GitHub issues by difficulty to implement. Higher = harder.

{
#35097 requires coordinated changes across tag-expression parsing, per-request routing behavior, fallback semantics, backward compatibility, and broad router test coverage; #34099 is comparatively localized to spend-log authorization/data shaping and UI verification.
}
https://github.com/berriai/litellm/issues/35097 4:1 https://github.com/berriai/litellm/issues/34099