API Questions

I'm slowly working through the API and the datasets available. The sensor readings appear that each Puck reports once every 25 seconds.  For data purposes this is excellent, but for historical lookback and analysis this means ~3450 readings per day per puck? 

I noticed the API was changed earlier this week that sped up retrieval but reduced the records to 150 from 300. A month's worth of data for my home (8 pucks) is 857,000 data points = ~5,700 api requests, double that if I pull down vent data. Is there a way to extract any averages or aggregates? I'm caching the data to avoid repeat requests, but going forward it's still a significant amount of data.

What are the units and range for the light sensor? I've observed 0-2650 but it looks like my median = 1 and mean = 12. Are there plans for this sensor to be used for occupancy?

When I query for beacon-sightings I see other users in my home reporting, but I don't see their devices under the device request. I have to use the beacon-sightings relation to view.

Is there any additional documentation available for fields or supported values for modification?