C# is basically "built for IDEs", even VS code can't hold a candle to Rider or Visual Studio - vim and friends are a joke in comparison.
I like iPad form factor and would love the idea of using it as a thin client for development, but unless JetBrains come up with iOS client for remote development (which I doubt) it's a non-starter for me.
Also what's stopping you from charging form USB-C monitor and using it as a hub ?