First of all, wonderful job on this app. It's so promising and I'm so happy to be a part of the community. I haven't been able to integrate it into my daily workflow because it's missing some key points, and every time I use it I stumble upon a lot of those.
One small detail which actually makes a big difference on regular usage is the fact that while creating a shape or resizing it, I can't hold space bar to move it. That's a feature most vector graphics apps out there include, and it makes life a lot easier in terms of positioning elements on the screen.
Does anyone else miss this?