If you have enough historical data (say 10 years), backtest the basic mean reversion system & record for each entry as much contextual information as you can think of.
Then do statistical analysis, and see if you can come-up with well identified contexts where there is a clear edge in either fading the move towards the band, or going with it.
Then do statistical analysis, and see if you can come-up with well identified contexts where there is a clear edge in either fading the move towards the band, or going with it.