It depends. Now, I know little about drafting; I'm approaching this from modelling point of view. (Yes, one can model with rectangles!)
A rectangle may represent something of fixed dimensions - even a two-by-four. It may be rotated, say, 89.999?, 90? or 90,001?. These all may, through display settings, appear as 90?.
Can anyone suggest a reason for omitting the rotation in certain angles? For the 2x4, I prefer to know if it is on its side, so even 90? rotation may well be information, perhaps even passed as numeric data to some other program (or a VectorScript even).
I'd hate to deal with three rotated rectangles, two of them saying that the rotation angle is 90?, one saying nothing.
I guess this is one of the situations when old hands want to stick to their bad habits (caused by bad programming until now) and the infamous "what they know". Similarities with the Attribute Palette thread: the Luddite Empire Strikes Back, huh?
Hey, this is actually true Progress! One of these decades, we may even have a decent CAD-program.
(Let me see... my wish list - ahh, there... implemented features... let's assume an 18 month cycle - some point-fives have been significant... no, some full versions haven't...)
OK, folks: by 2180 (? 20 years) VectorWorks can finally compete with leading CAD-software of 2007. Unless the Luddites win, of course.