Lack of 80 column guide line.
Here's the deal: I do not like visual studio, I do not like having my C++ code transformed into a DotNet-dependent executable, I do not like Microsoft marking perfectly good libraries 'deprecated' in order to fool the unwary into writing dot-net-specific code, and I do not particularly like Microsoft.
I am using Visual Studio Express 2010 because its free, and seems to be somewhat standard industry wide. I have used free C++ IDEs before, Code::Blocks extensively, but I'm pretty much done with learning command line stuff, and want to move up to windows and/or directx programming.
Lack of an 80 column guideline horrifies me.
Maybe this might not seem like an important feature to someone somewhere, but the reality is there needs to be a limit to how long lines are, and 80 columns, in addition to being a still reasonable limit, has been the industry standard for a few decades.
So at first I thought "Ok, maybe they want to save the good stuff for the non-free version"... as if a guideline is a "premium" feature, and not the most basic of the basic features..... but turns out the professional version doesn't have this feature either..... WTF?! Seriously?
EDIT: have found numerous blogs listing registry hacks to add a guideline. Couldn't get them to work.