As I understand it, the historical data for the various launches is stored in the S3 database, but the only way to get to it is to select a launch site and then use the Historical button.
Would it not be possible for this to be a global setting, perhaps selected by clicking on the time widget and getting a date/time selector?
If you are trying to find a particular balloon that you saw, for instance, on the 13th of April, currently you have to do a LOT of clicking through the UI. It would be far easier to do if we could see all the data from that selected date/time using the same "time window" setting in the upper left.