I used to run Ravenous Trap in my list, but eventually decided to switchover to just Leyline of the Void. How do you sideboard for the matchup?
A lot of dredge lists in my area are pitch dredge lists, so sometimes my Ravenous Traps would be plucked out of my hand with Cabal Therapy before I could use them and/or get countered with Force of Will, so I decided to make the switch.
I haven't played Survival since WAR became legal, but Deputy of Detention had been an all-star when I ran it.
Regarding the Bant versions of survival, I found myself regularly outpaced by Paradoxical Outcome decks. Sure you could go 'full throttle' and jam out vengevines, but if you do not get it done in one swing, then they could combo off and it'll be over. Additionally, a lot of lists are bringing in Grafdigger's Cage to prevent this move, so you're already playing a slower, more methodical plan in this case.
Switching to the hatebear strategy (Thalia, Gaddock Teeg, etc) would work more consistently than the 'full throttle' plan, but without any interaction on their turn (aka countermagic), it felt very vulnerable to Karakas and Balance.