I don't know if this has been suggested, but would it be worth trying Hermit Druid as a secondary (tertiary?)engine in survival?
One activation on your first main phase would put Vengevines and Hoggak in the yard (plus Wonder). Delving two of the Hoggaks would put the Vengevines onto the battlefield.
I thought I would throw this out there.

Yeah there’s been an active discussion about it for the last month or so in another thread.

http://themanadrain.com/topic/2900/new-graveyard-approaches-with-hogaak-in-vintage-post-aug-2019-b-r-announcement/32