I'm not suggesting downloading all events from the entire WoT.  I'm just saying that you add WoT limiting to existing filters that were already working fine.  So it will download strictly less.  It's just that the filter would be a huge list that may be too much for relays to handle. So I plan to just leave the REQ filters as they are and filter the results client-side.  But I wanted to see what others have done since many have walked this road already.