It means a programming language that is better designed and works better than most of today's programming languages, to start. Think better than C and Golang, simpler than Python.
It also means a compiler. A language with better toolchain and better development experience.
It doesn't mean an IDE, at this stage. An IDE might be as much work as the language. Although integrating with an IDE can improve the debugging experience.
What would your dream programming language look like?
I think the problem is that you would have to elaborate on what "better than C" means. And python is pretty simple, although I must admit I don't like white space being significant.
In just this one post, you used the word "better" a lot. But how would it be better?
I already really like C. And c++. And python. And javascript. And several others.
My question, then, would be what do you think you can offer that they don't already address?
Granted, I may not be your target audience. But I, as someone who is also currently designing a programming language, am curious as to what your thoughts are for your language.
Cost to experiment being low doesn't make non-obvious ideas obvious. As a trained researcher with patents I'm no longer surprised by how often simple ideas have remained undiscovered for decades.