Resizing Canvases and Text
 

I use OmniGraffle for UI design and often have to resize text and multiple canvases.

Would be nice if there was a shortcut key when resizing that resized text. The PDF solution is not a solution.

Would be nice if multiple canvases were selected that changing their attributes in the inspector changes all of them at the same time.

Selecting multiple canvases and changing properties seems like a natural improvement, but it doesn't exist.

just in case...

You can change text size on multiple objects in a single canvas using the fonts palette, and you can create a shortcut for it in preferences

You can resize multiple objects/type using master objects

Theoretically you can resize objects in multiple canvases, by changing the canvas size and choosing to print a single sheet per canvas. (that's how you do it in Visio, but I haven't had consistent results in OG)