It would be useful to have the ability on Analysis Transaction Graphs (eg: Average Transaction Response Time) to enable/disable (toggle) a horizontal line which denotes a SLA value or nominated Threshold value across the entire graph.

It will give a visual representation of when transaction thresholds were breached (or not) for the duration of the test. Useful for management reporting, for discussing root cause analysis ...etc.

Bonus, if you could also specify Line Thickness, Colour, style ...etc via the "Display Options" functionality.

Maybe a simple solution would be to just add a new "Threshold/SLA" Graph that is just a user nominated horizontal line. That new graph could then be Merged with other graphs in the usual way (existing functionality) and the resultant merged graph could be manipulated in the usual way via "Display Options".