Jerry, it would be awesome if you could implement the scan criteria from the below that isn't built-in to Medved Trader:
https://www.trade-ideas.com/Help.html
Especially Relative Volume, Change X Minutes, Volume X Minutes, Volume Today, Spread, and Average Daily Volume.
Besides those, many of the Trade-Ideas indicators are black box eye candy (ex. Triangle Top), that is not really useful. However, if the underlying code was viewable, and one could adjust the parameters, then it might be useful.