It kinda sounds like you're trying to reinvent the wheel here. While existing programming languages can present some issues, they are manageable. I use a refreshable Braille display, like many others, and it took a great deal of effort to learn the skills necessary to do so. In my opinion, my challenges are much the same as my sighted colleagues, such as parsing out verbose structures, and tracking down redundant coding. Someone learning Braille first has to learn Grade 1, then move on to Grade 2 (contracted), then learn Math coding. For some of us, we had to reteach ourselves a few years back, when Unified English Braille was implemented. I feel that after all the hurdle jumping I've had to do to get proficient in coding to this point, an additional system would be ice skating uphill. A lot of work, for little gain. If you plan on creating a new language, think about function over form, anything you would do to help yourself program easier, is most likely going to help other coders down the line. And as a general plea to all coders, please stop putting stylised images in your code, it's no fun trying to analyze code for two days, just to find out the part stumping me was someone's attempt to be cute and put breasts in their code.

Screen Readers have a few ways of handling whitespace and repeated characters. I am fully blind and code in Python, Swift, and build sites by hand with HTML and CSS. I do it all with TextEdit or Xcode. VoiceOver has an option that will read out the number of repeated punctuation characters which quickly allows me to figure out indentation levels of my code. I build in my own comments so I can use the VO-F search feature to jump to specific areas in a long program, or use the Jump to Line feature in Xcode to navigate around. I do everything by listening to the code and having all punctuation announced so I don't miss any important syntax; I can go character by character, word by word, line by line very smoothly and have adapted to those languages fairly well. Thereisn't much you need to do as long as the language can be written and understood in a basic text editor and make your manpages accessible and don't skimp on accessibility in online training tutorials or videos. If the language can be run in a Terminal environment, all the better. Honestly, the worst thing about learning coding is dealing with indentation and how syntax is presented in training. The code element in HTML sometimes doesn't account for whitespace so the screen readers won't read that back making it hard to figure out the correct indentation while learning something new. I also found that I detest spaces since it's harder to jump through all of that character by character; tabs get announced properly by VoiceOver along with how many of them are together to establish the indentation, plus they are easier to navigate in large blocks of code.

I was also going to bring up python.
One other thing to think about that could be nice is certain characters that define words. For example:
foo.bar(spam)
When I move by word, it's annoying to move across that whole phrase. I'm not sure if that's part of it, but there have been some annoying times trying to navigate with the keyboard only