Agree, good point! I will add those 2 to the gauge list. Not sure where to tie all these gauges in.? I know the tell-talle wasn't pi$$ING at last year's start up but that was due to a hose either fell or blew off. What a pita for a simple little hose, it was "up n under" lol.
As for a water psi gauge. I recommend it always. It is easier to see than the tell tale and will show you a water flow issue long before the temp increases to overheat.