for what its worth, we usually set up our race car dashes to display 'exception reporting"
so, the background display might be a tacho and then the the other 'gauges" only appear if any of the inputs is in warning mode, eg, water about 95C then alarm beeps and gauge display comes up
most folks set the display to display an analogue face type display or a bar type graph, not just a digital number
i can send you some screen grabs if it helps
i'm still concerned about size based on real race car experiences. the smaller multi-gauges started on bikes and when guys tried them in race cars, they gave up due to size. now, the smallest race car dash is about 100 x 80mm display size
good luck, i'll keep a watch on this