As multiple subspecs may still take a long time until they may be done, I have a suggestion that would at least make it easier to quicker switch subspec:
Let us directly change the strategy and blender on the addon import window (which should show all strategies, not only from the current spec), so that when I import my multi-target spec after having completed getting the best in bags for single-target, I can quicker switch the strategy.
This would also result in 1 less best in bags calculation, because currently, after doing a best in bags and then importing a new string, best in bags is automatically recalculated and only then can I change the strategy.