It would have been nice if you could make it an option to have 1 pixel in between candles/bars for all candle sizes.
I guess the most used Bar Spacing numbers used by MC users is 4 and 8 and with Bar Spacing set to 4 one have the ability to have 1, 2, 3 and 4 pixels in between the candles. But with Bar Spacing 8 and 12 which is the next actual candle size options after 4 one are forced to have no less than 3 pixels in between the candles. With Bar Spacing 18 which is next actual candle size in line one are forced to have 5 pixels in between.
If one do not specifically need or prefer 3 or 5 pixels in beween the candles/bars then it just takes unecessary space in the charts. Personally I would prefer 1 pixel in between for all candle sizes, because this also gives me a better/closer feel with the flow of the candles/bars for each swing.