The lack of integrated terminal or method of running a go program makes me question what use this is to someone.

I'm quite happy with my current editor and probably wouldn't use this, but I have also never used either of those features. I run my code using a separate terminal in a separate window, and can't really understand why anyone likes squashing their terminal into the same space as their code (although I recognise that they do, and I'm glad that they can if that's what they want) - seems like it would be distracting and reduce the amount of code you can get on screen at once.