Position Visualisations Relative to One Another

SAP Business Objects Web Intelligence has a fantastic feature called "relative positioning", which allows a user to position a visualisation relative to another. This would solve a lot of Spotfire issues with regards to legend positioning, as well as when you are trying to compare one graph with another and line them up against one another.

For example, suppose you are trying to compare a measure by hour, and you would like to line graphs up for different metrics on the x axis. Currently in Spotfire you would have to do this by eye, and there are a lot of things that would throw  the positioning out. Even if the position is a little bit out it makes it very difficult to compare metrics properly across the X axis.

Combining this with being able to size elements of a table individually or as a % of the screen size would really improve Spotfire.