@AeonSovarius I've been playing leyline in my board for my last 5 leagues and im something like 21-4 (25-5 if you count unsanctioned vintage events). Personally kinda depends on how well you know the vintage metagame. Im a pretty new vintage player and i feel like leyline is more cut and dry on which matchups you want it and which you dont. You may be crippling percentage points in matches like xerox (but the match is already somewhat favorable).
Dont know to much about the other versions of survival since ive only been playing BUGw.
I personally would play leyline ,but following @GutoCmtt is probably correct. Guy finished with 20ish trophies last season.
Going to try to upload an interesting game i just had against Oath. We had an interesting game but i feel he may have boarded incorrectly (i dont really know). I make some interesting misplays that may have cost me the match but feel like there are some important cards in the matchup that really showed their strength.