I'm assuming from the burn side of the matchup, you hold burn back till they've intentionally knocked themselves down to 4/4 or 5/5 DS range, then unload. How does the deck deal with anglers or tasigur, though? I guess that's the idea behind those sb options? Bridge won't work too well since they can stub it or k command it after resolution, so crusader is your better choice there. Actually applies pressure too in the absence of needing to hold the fort.
Alternatively, if you have access to white, as the crusader suggestion implies, you could just run a more flexible piece of hate in rest in peace. With the gy gone, they won't be hardcasting their delve threats anytime soon and you eliminate a good chunk of snappy/thought scour functionality. It is pretty terrible if it shows up after the delve threat comes online, though.