For deployment + debugging, you could try this: https://github.com/phonegap/ios-deploy
Looks like it runs lldb itself, but perhaps with a bit of work you could get it to interact with gud-mode?
jetbrains.com (intellij, appcode, pycharm,webstorm, rubymine etc)
sublime text atom vim emacs eclipse
To make VS somewhat usable, you need Resharper - made by the company, that makes Intellij.
And that without mentioning ReSharper which enhances VS quite a bit.
> There are like nine different versions of Emacs for OS X...
I don't think Apple is blocking that. If you're looking for something for iOS/Mac dev, all the build tools are available as command-line interfaces.
VS + VA used to be fantastic, today it's just a piece of ... overpriced crap.
But maybe expecting more from $2K+ software (VS) than from FREE software (xcode) is wrong.
There are like nine different versions of Emacs for OS X...