This app is my choice for sketching mindmaps, but these couple things are really needed to this app work efficiently
The most important !!! thing this app needs is
-Lasso tool -> moving, scaling, rotating, objects. This is a must!!! (helps organizing bigger notes like complex mindmaps)
These would be very nice to have.
-Zoom indicator, displays the zoom level % while zooming, plus visible grid on/off
-Text input with just couple nice fonts (like ereaders have) or even one good like verdana. Fonts (vectors) can be adjusted later with lasso tool (scaling, moving, rotating)
Other Adobe tablet apps that might be alternative options to suit what you're looking for
Photoshop Touch - More complex than Adobe Ideas but allows you to create layers, includes two brush tools (paint and spray), text and selections including a lasso tool. App could be described as a limited version of Photoshop for tablets. PS Touch does have Zoom support 35%-400%. Text is rasterized after creation and no longer editable as text but can be moved, rotated, resized, etc. Note: this is a raster not vector app, not sure that matters to you. http://tv.adobe.com/watch/adobe-touch-apps/adobe-photoshop-touch-overv iew-video/
Adobe Collage - Collage or mood board creation app, import images and draw a shape around the portion you want to keep (sort of lasso related), includes four different drawing (or markup) tools, pencil, pen, two different markers, and support for creating text. http://tv.adobe.com/watch/adobe-touch-apps/adobe-collage-overview-vide o/
If you are more interested in staying with Adobe Ideas then what you should do is create feature request posts for whatever features you would like to see added. Its actualy a separate section than the discussions area here just called Ideas, there should be an option on the side for "Create a new idea". Please post each feature request as a separate post so other members of the community can vote on the ideas, the developers look through the ideas and note of votes on them when considering changes and adding features.
I wasn't quite sure what you meant by wrist protection so I didn't really include anything about it.