Actually, you can choose a color by hex value... it's just hidden because it's the Mac native color picker. (We're in the process of writing our own now, so it won't be this obnoxious in the future.) Second tab, select RGB in the drop-down.

Definitely give XD a whirl in the upcoming months, though, and please please do log what you need in adobexd.uservoice.com. We can't read minds, and we really do want to listen to what the you all need and provide an app that will meet them.

Sorry to hear that is your impression @nkrisc. You probably tested our Beta 1 (Public Preview) released in March, that is our first beta, so there is a lot to be done. We have a new preview (Public Preview 2) going out in April with a lot more features. And yes, you can expect a tight integration with Photoshop or Illustrator, it's just a matter of copying and pasting items from them to XD. You can even bring content from Sketch: https://www.youtube.com/watch?v=TyoFGyENt3g Looking forward to hearing your thoughts, and please expect a lot more features landing in our monthly releases. This is just the beginning :)