I think it'd be useful to have a field to permit custom multipliers in the Graph widget. I had a use case come up this past week where we produce a metric in bps, but we needed to answer the question, "How many Bytes per day". The Graph widget does not allow for an accurate calculation of this today with any of the aggregations. 

This feature should also be contingent on fixing the issue identified in ZBX-23253. 

In addition, when aggregating multiple rate-based metrics in a dataset in order to get accurate calculations we would also need an aggregation function that produces a sum of the average, as the sum aggregation adds a multiplier of COUNT from trends when the data source is trends, which will produce an incorrect metric value for rate metrics. That should also be a prerequisite to this feature request, in ZBXNEXT-8072.

I've included some screenshots of the mockup design.