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You could hide EMAs, but hide the MACD is not supported in short time. it will be part of support any number custom of indicators, and that is complex parts and will take a lot of time to code.
Show 4 days with 15 minutes currently is not supported, the minmum for the chart setting is 3px with space 3px. and display by period range is out of chart's ability, and there is no plan to support dynamic width of bars for CandleStick. maybe will support in Line chart or custom minmum charts width setting. but I think it would be very low priority feature.
Thanks for adding the possibility to hide the MACD, having as little clutter as possible is essential in technical analysis (but then what everyone finds useful varies greatly).
Now it's unfortunate that we can't increase the density, there just aren't enough bars per charts... any move in that direction will be welcome.
Cheers.