We appreciate your feedback. Although we won’t be implementing this feature in the near future, I did make a script that can do this: https://pastebin.com/yHZYnLMV.
excludeWords is a list of strings that are not matched when converting words to sentence case. Just save the script as a .jsee file and add the macro in the Customize Macros window. The words that start inside the selection are converted to sentence case when the script is run. It’s not exactly fully tested, so let me know if it’s not working.