memory lane. to uncover some of the Survivors frozen memory containing vital information (during the war) on, perhaps, a: secret weapon, important resource, tech. . . etc. If we do go back in time it would most likely be similar to the anchorage dlc, where you assist a particular group to find something that is in your memory but maybe inaccessible without some help to unfreeze the memory.
No........although as has been said before the Memory Den offers the ability to re-live the pre war era so it could be used, but actual time travel no not really interested.