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

{
#28019 requires broader routing-path changes and cross-scope compatibility validation, while #34905 is a localized metadata-merge correction with focused tests.
}
https://github.com/berriai/litellm/issues/28019 4:1 https://github.com/berriai/litellm/issues/34905