A solid feature that would help enormously would be something where the alert target moves when the fundamentals move - so something of a dynamic nature. 

Much like ratios, the OSV scores etc. 

A static price indicator would not suffice and there are many of those already. 

Use the metrics you already have - should be relatively easy to implement :-)

Sure, this does not have to be a fast trigger - just something that tells me that something is getting interesting using any of the statistics you have in the screeners.

Perhaps the screeners would be the best place to implement the feature?