Great analysis, and with candor and transparency, too. Thank, Kim.
The comment about directional trades did resonate with me, as I have been watching them from the sidelines, or had modified my own trade away from the official. Directional trades probably have their place in a basket of strategies.
However when they deviate from the core thesis, it's a red flag for me. Many such trades started out delta positive right off the bat, with no (or not enough) room for error - just the hope that the stock would revert if it went south (pun intended). Somewhere in my basket of wisecracks is a saying that goes "Hope is not a strategy". In such cases I tended to stick with the original thesis, which worked better, or at least add a simple hedge - one that is understandable by the lay person - kind of like like we do with our Double Diagonals, where a calendar is added to mitigate the non-movement of the stock.
Taking the loss on a bad trade and moving on is another thing that traders tend to postpone, and then find themselves in trouble. The persistent red values in the daily trade log that present themselves hour after hour and day after day tend to make traders obsess over recovering from them which takes away time from finding potentially successful new trades. Someone had mentioned a while ago, and I agree whole-heartedly, that there is a psychological cost to staring at ugly red losses on a continuous basis. I personally tried this "different" discipline earlier - that is, mostly sticking to the defined max loss and/or profit targets - and my trading became more fulfilling, the losses smaller in number and value, and profitable trades more numerous. Even the moments of depression were fleeting when the closed losing trades were put aside in the cumulative trade log, leaving the active log looking a whole lot healthier.
The wonderful thing about SO is the thinking, back-testing, discussion and evolution that have formed all the core strategies, and this time is no exception, I'm sure.