You don't really need a REPL with an IDE, you have excellent auto-complete which shows you the API (which is what I use the Python REPL for) and are unless you're writing pure framework code (or mapping etc - in which case integration testing gives more bang for the buck) then you're probably writing unit tests. I use a continuous test runner for those as the feedback is amazing.

API autocomplete and unit tests are not a replacement for a debugger, it's a separate use case.

Being able to evaluate code while in the middle of a breakpoint is extremely useful.

You don't need to say it doesn't matter. Your language has features Python doesn't have, there can be tradeoffs

Not natively, but there is a community developed one called gore: https://github.com/x-motemen/gore