I mean I miss some language features for sure, but the problem with adding language features is that it adds long-term inconsistency. Take a Go codebase from 10 years ago and it should look mostly the same as it would if it was rewritten in modern Go. Do the same with Java and across generations you'd go from straight for loops, to generic iterators and their for-each syntactic sugar, to for-comprehensions, streams and their functional programming style, to whatever Java is up to in 2024, I stopped paying attention years ago.