Granted, this sounds like my proposal for Driven/Despair, but that matchup is extremely winnable. In my extensive testing on MTGO, that Reanimator-favored environment, I had no problem maindecking a Faerie Macabre or two.

Reanimator remains a stick in our craw, and that's true. Don't let this deck discourage you from piloting Dredge. Even with a couple more outs that are good vs other decks, the scare for them is real as it has always been.

I can't comment on (a) since I've been out of it but I'm willing to bet it's not as much of a threat as one would think, especially in the bigger bouts. Do you remember our problem with this deck? It was (a) a corner deck, and (b) one that relied on mulliganning to Leyline of the Void against us. Sure, colorless(ish) Stompy got a boost with Gravestone and other friends. Based on what I see, I don't envision that deck gaining anything we couldn't already defeat. These are the kind of decks that have a slow clock with Deathrite Shaman main (which we already know we can beat), and then battling Surgical Extraction post-board (which we can play around well enough to win one of two). We're battling the same kind of Grixis Delver decks we were 18 months ago. Here are a couple thoughts from perusing those top 8's and 16's: I'm glad to see our deck putting up results in my absence.

Mtg dredge legacy primer