It isn't possible to create multiple list items in an action, to counter this in the past I have created a new module with the same line items as my target and a number of dummy list items. Users have then filled in the line item details here before using an import action to add all the populated members to the target list.
Great question and the answer would be no, not in that view. When you add member(s) to a list, that module has to be dimensionalized by only that list because the system can't handle multiple names/display names if the results are dimensionalized by multiple lists. Hope that makes sense, but I feel that is a messy explanation.
Let me try it again....If it is only dimensionalized by that list, the "display Name" can only have that one value. But if it is dimensionalized by Version and Time, this will not work because in theory, the "display name" can have different values for each version and time period.