Instead of me fantasizing please refer to this actually simple language proposal on what and why is missing and how (very likely) lambdas will look in C++20. Modern C++ lambdas will be even better.
Make no mistake though. Lambdas are already extremely important, and largely responsible for the modern C++ paradigm shift. Lambdas are one of the key abstractions making C++ “feel like new language”. After C++11 that is.
And here we keep on showing what you can do with modern C++ lambdas right now.
Ah and yes, the simpler the language the better any modern C++ article is.