I find systems trading interesting. Its the perfect way to remove any emotion out of the trade, but of course, its probably missing far too many nuances that a discretionary trader can see. Once again though, given what you wrote, I wonder how badly the system would have done in the end if you didn't start averaging into stuff as you say, which doesn't sound like it was part of the plan to begin with.
The thing is like you said systems trading misses a lot of nuances in the market, there are alot of variables that can change in the market that are very hard to account for such as oil blowing up in 2015, so some systems go from just killing it day after day to losing money just as quickly when something gets out of whack with them, you tend to fine tune the system to the market you are in and variables can chane real quickly.

