Several Moscow 42 Questions

[Mr Grumpy]

Alternative Direct Fire Resolution

Because this is an optional rule and not default you still need to select a target unit even though for soft targets the fire results are spread amongst all the soft units in the hex. In France 14 where this rule is default you don't need to select a unit.

My best guess is that when you select Alternative Direct Fire Resolution
although the fire results for soft units are different, the default process of firing is retained (i.e you must select a target) and i can understand that could seem odd/confusing.

I have yet to use Delayed Disruption and so i cannot comment on that rule from my experiences.