Comment by bluGill

Languages are "Easy" to design. There is nothing wrong designing a new language and it can be fun.

There is however something wrong with releasing your new language! In most cases you should show it off to close friends, or your professor, and then burn it and all the source. Sure you might be better than the current language, but you won't be enough better as to be worth it. (even if the language is notoriously bad C++ where it is easy to be better - you won't be enough better as to be worth it).

If you want a better language there are two good options: switch to a different one that already exists; or make your language better. There are lots of great choices for languages out there if you want to switch. If the language you are thinking of doesn't have an active community of people working on making it better, it probably isn't a good choice.

Whichever language you choose though, libraries are the hard part. There are a lot of bad libraries, we need someone to write a better one - but only if one doesn't exist! For the great libraries out there, most need someone to contribute.

A large part of libraries is the consistent interface. Often there is a great libFoo and libBar, but their APIs are not consistent and so we need a libBarWithFooStyleInterface, and/or libFooWithBarStyleInterface. Better yet, we need everyone to come together and agree on how the interface should be and then make both use that new standard - cleaning Augean stables with a toothbrush seems like an easier task. Of course in the real world there a hundreds of libraries each with a great interface that is not consistent with the others.