From emails with @Capt_Swing :
Sometime in the next few months, I plan to start using ORES edit quality scores to determine who to send invites to, which would hopefully help us reach out to new editors in a more timely fashion.
If we use ORES, we can analyze the first two edits and have pretty strong certainty of the user's intent.
For a long time I've been intending to use ORES scores to find new people to invite to the Teahouse. That approach would get invites to new editors more quickly (hopefully before they give up), while potentially avoiding the problem of sending invites to bad-faith newcomers.*