When I use the popover to input “p suffix text” (note there are two spaces after the p), I only get one space. Is there any way to insure an extra space gets added? I’m always having to go into the properties panel and add the spacing. Or perhaps a way to edit the horizontal spacing between a dynamic and the suffix text? The default spacing with just one space is too close together for my liking. (The opposite for prefixes would also be nice).
In the dynamics popover, you could enter p, a space, Alt+0160 and the suffix text.
I assume that is on Windows (a ‘hard – non-breaking – space’)? On a Mac it should be ‘option-spacebar’ (occasionally ‘option-shift-spacebar’ in some apps) for those on MacOS). 
— Jim
From a quick test, there has to be one real space between the p and the text for the parser to understand. But once you’ve added one space, you can add Option-Spaces and each one is preserved.