When I use curl, it's mostly when I need to check header or to trace requests in the network, for which I just use -vvv. Simple one-off stuff.

So I wonder how much demand there actually is for advanced features like this. When I need to make POST requests with queries and data, I would just use python because I most likely need to process the response (parse html, store json output to database, etc.).

Adding advanced features are nice, but IMO this might lead to over-engineering and it might be hard to maintain down the line.