I have a suggestion that would make customcandle indicator much more universal and applicable.
Instead of it displaying only preseted time frames, you could add option to display multiplicator of 1 candle. So.......... x times 1[chart] candle.
For example, i have opened 3 min chart and i wish to set custom candles in the backround displaying x3 candles....so 9 min chart.
We could also use this on price based chart option (range, renko, tick), making customcandle indicator truly universal and adjustable for multiple purposes, not just displaying default time frames in the backround.
One more good feature would be, adding more display style options not just "filled" candles, but also "empty" candles with different lines to choose from.
As an example i m attaching range bars chart with 5x candle overlay from mt4.