Seems cool, and a bit awful. Writing elaborated python-code in that little text-field must be a nightmare of its own. Where can I connect a VS Code or vim to the sheet for coding in comfort?
My thoughts too. Not having to install outside software is treated as a feature, but it is a lost opportunity: Excel with tight VSCode integration sounds like a killer app for decades to come. Two best-of-class (respectively) programs, each in realms dominated by Microsoft. Combine the two and unique possibilities unlock, bridging the gap between business and development.
No one seems to know that an VBA IDE is part of Office. It's important to remember when you're working on an extremely locked-down system and you want to do something complicated.