Such a small thing, but we are manually checking how often and which emails prospects are opening (even better if they click) as one indicator of whether we should pursue a person.  I think the line by line appeal 'pod' could actually be replaced by a summary (by market segment/package type) describing received, opened, clicked rates AND THEN we can decide to open a side panel of all appeals drill down to line by line. Or, you could tweak the relatively useless timeline or tags pods to show more outcome oriented info (events attended not just invited and appeals they gave to or otherwise responded)