I like the draw by grid, but it would be great to have a radial array as well.

In your user manual, you show an alias for ellipse which draws on "current layer" - how to make an alias that will draw an object on a set later every time, and if layer doesn't exist, create it...

Also, will you have dragable guides (like Visio) from top and bottom, I use them extensively in the diagrams I draw... (drawn thousands)

Radial arrays are a planned feature. I'm still undecided on how the UI will work (if it will be similar or not to the existing duplicate on a grid tool), which is why it didn't quite make it into this release.

You can define your own function to do what you're describing. It would just be a part of the function you define before calling the underlying Vexlio `ellipse()` function. Your alias function signature would look something like `function myEllipse(L, ...)` where L is the specified layer to check and create. Then the rest of the varargs would be passed to the `ellipse()` function.

Draggable guides are a good idea (Inkscape has them as well) that I'd like to add.