I do not want to demoralize your adventurous exploration but just changing the default Candle OHLC values to Heiken-Ashi OHLC for the calculation of SuperTrend or MACD won't yield you anything magical.
Seban's SuperTrend is nothing but a Trailing Stop using Wilder's ATR (Average True Range). In order to formulate ATR, actual High Low prices are used; when you change that to Heikin-Ashi High Low, you are further deviating from the reality.
Similarly, MACD measures the difference between two Moving Averages (one fast, other slow) and tries to depict their relationship in terms of their Convergence and Divergence. Now ask yourself, are you in-tune with the real market when you calculate the Moving Average of Heikin-Ashi Close which is a distorted value of the Real actual close of a candle.
When markets trend all indicators show and behave in similar manner because they all are derived from the Price. Thus they all look beautiful on the left side of the chart but its a totally different story on the right of the chart - by no means, it has any power to forecast the future. Let the consolidation of price come, all indicators will whipsaw you out. This is a game of probabilities, so statistics matter not technical indication.
Keep things simple! Mixing up indicators only over-complicate things.
Desi Hindi: Rassi ka ganth kholna hain toh, us ganth to khologey? Ya aur ek ganth lagakey usko kholna chahogey! Anth mein ulajh hi jayoegey na !!!!
In English: If you want to untie a rope, would you untie that knot? Or make another knot to untie the previous knot! At the end, you will ultimately get entangled and confused !!!