Vertical should be the default layout instead of horizontal. Horizontal gives the kids on school Chromebooks about 13 lines of code to look at (Tiny). Vertical gives 34 lines of code. If you also collapse and resize you might actually be able to program something.
We need a REPL. We just do. It is part of any modern IDE.
A few more modules would also be nice. turtle, Pygame, and Scikit-Learn come to mind.