... the preponderance of features means it takes a long time for new contributors to get up to speed. What projects have you worked on that language features a

... the preponderance of features means it takes a long time for new contributors to get up to speed. What projects have you worked on that language features are a greater barrier to effective contribution than a deep understanding of the problem domain, adherence to project coding standards, and design principles of the code base? You can look up language features in the manual.