baseline_engine has the probe callbacks _add_thresholds and _add_baselines. I've used the similar callbacks with prediction_engine and they seem to work fine. You will give up the ability to edit these settings via admin_console since it appears that admin console keeps it's own copy of what these settings are instead of asking the probe for the data even though there's a callback for that too.
Since these aren't documented, you will need to play with them to get it to work.
I would love to know what you find out as I'll be doing this too once all the defects in the way the hub handles this prediction/calculated data are fixed.
-Garin