Concept of lead is very limited and follows idea where lead is related to a person. In real life you can have multiple leads per person - especially when selling to government sector. if you have multiple or many leads e.g. 60 per person then its impossible to identify related activities due identification of the lead goes through a "person". It would be neccessary that similar to Opportunitites, activities and other related records will show relation not to a lead "person" but "topic" - this way you can understand relation to actual lead. Right now no clue and need to literally open all records to find "the right one".