Granted "blanket additional insured" endorsements have reduced the need for countless specific additional insured endorsements (which makes this concept somewhat of a challenge)...the main utility of a widget like this is to put things in perspective for entities that are requesting additional insured coverage.
Considering that all additional insured parties are essentially "sharing limits" with all other additional insureds (and the primary name insured), a widget like this would help additional insured entities understand that they are not the only additional insured on the policy.
When put in perspective with this data widget, entities that request additional insured status will better understand that this endorsement is not the "end all be all" endorsement to "save the day" and completely transfer/mitigate all risk and "give everything" to the additional insured.