1. Implementation strategy would be same as normal archiving objects that yo use to follow.
2. Check the dependency from Network graph available in sara, from functional prospective dependency you need to analyze with your functional team by running few archive runs in test environment.
3. Retrieval mechanism would be using Info structures and read programs that are available by standard.
In additional to this you can also use the below t codes or reports to display archive data.
--> KE30
--> KE24
--> KW25
--> KSB5
--> KABP
4. Functional purpose on each retrieval is limited to your requirements..