Bad subject line but I think a diagram that plotted all of the Festool Drills along an x-axis and capabilities along the y-axis to visually "see" how each tool is suited for a range of tasks. Of course Festool would like you to own "one of each" and I would certainly like to own "one of each" but from an information design POV, plotting a range of tools in this fashion would make it easier for people to decide what tool to use and where the boundary cases lie. For example, where does the CXS begin to work outside of its design zone versus a T-12+3 etc. and maybe even scope it out to the ProTools category of impact drivers and such.
I'd also love to see an "ecosystem" diagram of all the Festools and how they are all designed to work sychronously.
I'd also love to see an "ecosystem" diagram of all the Festools and how they are all designed to work sychronously.