if I invest for say 10 years with a conditional exit/hold strategy at tne end (i book profit and exit if I am in green, or decided to wait up to 5 more years till i turn green / with a minimum threshold) ...would that flexibility in investing strategy bump up my annualized returns (and presumably significantly reduce negative returns)?
This sounds at its core like a "wait until I've made my money back" strategy. And yes, per definition you're guaranteed to make your money back if you follow it.