Sometimes one of the sides are better, or sometimes on some etf you need to play either long or short, but you build long and short just to add sample size.
I propose to add a 'Delete' button on the Improver just to delete the long or the short side on entry or exits.
That way you don't need to manually delete one of the sides in the algowizard, and you can run it on a batch of strategies.
See attched picture.