as with ellie, i'd also be very interested in a device that you could plug some external sensors into as well (such as an oil pressure sensor, oil temperature sensor, exhaust temperature sensor) for an all-round unit, so you don't have to have seperate gauges for all of those, but could view them all in the one unit.
The problem with running boost displays through an electronic readout such as this, would be it is constantly changing at a very fast rate, which makes it very hard to read, and you would need an extremely high refresh rate on the unit as well. You're much better with an analogue gauge for that type of display.