link behavior on the diagram

[j33@1]

I'm having a real issue as to how the UI works with EA.
I cannot get the link arrows to behave like I need them. First off, any resizing of an action or activity changes link placement. Second, moving them around doesn't always work. It appears to limit a link end to a quadrant of the activity or action and a lot of the time using one end of the link wont move it at all. Thirdly, how do I get a link to go automatically horizontal or perpendicular instead of angled. This should be a one click solution and tidy line angles just doesn't do it.

[thomaskilian]

You could use line style "Auto Routing" but what you're probably after is an option to limit any vector to moving along only horizontally or vertically - which is not present.