I would love to use Mathematica as my primary lab notebook. However, a feature that I am constantly missing is an improved support of free-hand input on a tablet computer. This might be either an iPad or a Microsoft Surface tablet. I am aware, there are the "drawing tools" on Mathematica Desktop. However, they do not really nicely integrate with a stylus (e.g. they don't recognize different preassure levels or stylus tilts). So, currently I have always to keep a OneNote notebook and in addition a Mathematica notebook. In Onenote I store handwritings, screenshots (with markings like arrows, small text labels and so on) and photos taken with the back camera of the Surface. In Mathematica, I analyze quickly measurement files and keep track of theory stuff.
It would be great, if Mathematica could fill that gap and extend the Notebook capabilities towards a more "natural" user experience for having free-hand input! Maybe a way would be to include a new "free-hand cell" that works basically like e.g. the old Windows Journal (in which you can also expand the canvas if you run out of space etc).
what a great idea!
I'm actually experiencing the same issues with my remote math teaching activites and I hope Wolfram can seriously consider implementing that functionality in the near future.