Arrows could be a lot better...

First, thanks for your great product. It helped me a lot in recent new product planning.

Arrows deserve more attention and design makeover than they've currently got. Problems and suggestions:

1. When you draw an arrow, the entire bounding box becomes the "hot area" to select this arrow. This makes it extremely difficult to select objects behind it. Since arrows were usually drawn as the last (top) layer, and some reach really far, this issue is more annoying than I thought I could cope with. Is it possible to select the arrow only when I click on the line?

2. Sometimes arrows with dashed or dotted lines are needed. Also its line width should be adjustable -- sometimes I think the default one is so broad that it looks intrusive on the big picture.

3. There is no way to make a "straight" arrow. You can make it "sort of" straight but it looks weird. Also, it's almost impossible to move such "sort of straight" arrows without first expanding its bounding box a little.

4. No way to make an arrow of "arch" shape -- you have to connect 2 half-arch as an approximation. Same for "Z" shape, or simply a right angle.

5. This one might be too much to ask -- auto connect. Can I "glue" the ends of the arrow to other objects, so that when the objects move, the arrow automatically follows, and chooses the best path/shape to minimize overlap with other objects?

Arrows are very important in UI mockups. I usually use it to tell people which button/menu leads to which figure. It can be improved a lot in my opinion.

Thanks again.