I agree with a easier to see display. To go really far out on the wish limb, I would like a color display like most of the newer GPS systems have.
It would be great to then have the colors display in a meaningful way to perhaps give an indication of depth. Another thing could be one color on the display for your desired targets to be the background for your crosshair. Then you could see for instance if the crosshair is where a $5 Gold coin falls. Something you possibly would dismiss going by your personal memory alone.
But, the SE is great. I guess you could add GPS, Bluetooth, etc. and folks would buy it whether they actually need it or not.
I think what most treasure hunters really care about is performance. Nautilus is a good example. It is about as basic as it gets, but it does perform well and it doesn't even have a display, pinpoint button, external speaker, and the batteries are not even inside the box.
The Excaliber is another example. It's technology is kind of getting long in the tooth but it is still performing at the top.
Even so, I look for Whites, Minelab and Fisher to release some very inovative detectors in near future that improves on everything we use today. Quality and performance will be at the top of the list with user friendly bells and whistles close behind.
Just my take. Only the future will let us know for sure.
HH Alton