Many times we like to have smaller more intimate conferences where we can sit around a table and discuss strategy. This format conflicts if you need to also present something to the group and need to stand in the front of the room and present your slides.
Why doesn't someone manufacture a box that has four or six or eight screens in a box, hexagonal, octagonal shape?. This device can then be placed in the center of the table and everyone sitting down can view the presentation while still sitting at the table and looking at each other. In addition a wireless keyboard and mouse can be at each side of the table so that other members may present or point discuss about items on the monitor.
This would I believe promote more interaction.