We strongly don't recommend it.
Those frameworks have been thought of deeply from a Quant/R&D perspectives.
If you add your own indicator to enter earlier/later, this will change the whole logic of the entries and exits.
The exits are calculated relatively to the entries and vice-versa.
Hence changing anything may or may not work... but, likely won't work in the long-run.
Though, we're opened to any suggestion you may have.
If you think that a specific indicator increases your trading performance, then we'll be very happy to hear about it and learn from you how it enhances your trading performance.