The Opportunity Influence Analyzer is great per opportunity, but it would be great to see the interactions in a list format, and then in aggregate.
For example:
Opportunity A
1) Webinar 1
2) Nurture Email 1 Clicked
3) Nurture Email 2 Responded
4) Sales Call
Opportunity B
1) Webinar 2
2) Visited Tradeshow 1
3) Onsite Visit
Where Opportunity A and B are both created as a result of one campaign, Campaign A.