Is there a more efficient alternative to pull down resistors?
Note that the current is wasted regardless of whether the circuit is "on" or "off" &mdash; when it is "on" the voltage drop across R11 is only slightly less than when it is "off".

Using a PMOS transistor instead of the PNP would mean that the pulldown resistor could be on the order of megohms, reducing the "leakage" current to microamps.

Or you could use a different strategy altogether, eliminating the off-state current entirely:







simulate this circuit &ndash; Schematic created using CircuitLab

Better still, combine both ideas and get minimal wasted current in the on-state, too:







simulate this circuit