Additional capabilities for rollup analyses

I find myself making analytics on child elements which by themselves have limited value, but are needed to get rollup analyses to work. This adds complexity to the design of AF. Two ideas would improve this: 1) Count # of attributes that meet a certain criteria. For example, you want to count the number of active HIHI or LOLO alarms on child elements at a given time, so you'd have a rollup analyses that counts how many attributes 'Alarm Level' equals "HIHI" or "LOLO" 2) Additional attribute filtering, such as AND/OR logic. Continuing with the example above, let's say you want to only want to count alarms that are applicable to temperature probes, i.e. parent attribute contains "Temperature" and child attribute is "Alarm Level"