While the new Alfred 3 release is great (converted me into a Mega Supporter) and I'm still in the process of figuring out what to do with all the new toys, I'm curious why there isn't a native workflow action which would re-query with the given feedback and/or variables. Especially now that we have all these utilities to manipulate the stream.
These types of "looping" workflows with Script Filters are pretty common and extremely powerful. It would be nice to be able to get rid of the (flickering) Applescript workaround.