so you want to use 0.22uF as series impedance to get low voltage out? with no isolation from mains? there must be also resistor in parallel with 0.22uF so when disconnected from mains, potentially high voltage across 0.22uF capacitor will discharge (for example 220k, 1/2W).
at mere 15-16mA, there is no need for 7805, why not use bridge rectifier, filtering capacitor and zener diode to clamp the voltage?
supposedly zener is 15V or so, then you can use SMPS to get 5V and higher current output (~45mA).