Hey there !!
I have a few small suggestions :
I have seen that on Python, when you type a function name and then put the opening brace (the way of giving arguments / parameters) in the shell window, a small popup comes up showing a sentence or two on the function and its arguments. I was wondering if such a feature could be accommodated into the usual Arduino IDE (the one I have is 1.8.13, I guess). Also, there is this specialty in Python that when you start typing a function name and forget a part of it, you can press on the Tab key and see a list of predictions. That feature will also be helpful if accommodated into the Arduino IDE.
Another one : users can get updates on upcoming Arduino contests once connected to the internet.
I suggest that you post it on the website as a ‘Summer Update’ (It’s summer here in India ).