I ran this at FFG's Store Championship. It went 2-2 on the day, as I got agenda flooded in two of the games. That's the risk of running Braintrust, but it's needed to have a shot at forcing match point in a reasonable amount of time.
This archetype will improve dramatically when Honor and Profit comes out and we can run 3x House of Knives, 1x Philotic Entanglement, and 2-3x Fast Track to search that Philotic out when we need it.
That said, GRNDL Refinery has been a really nice add. It's based on an ONR card that I used to run and was very fond of, so I'm happy to see it back. Stabteki really wants Runners to explore its remotes, and GRNDL Refinery plus Ronin provide reasonable encouragement. The Refinery also has the benefit of turning on Restructure.
Snoop is pretty good, but I do think I'd like another 1-2 pieces of taxing/ETR ice -- maybe the third Tsurugi plus something else.
I also want to test with Toshiyuki Sakai, but I ultimately couldn't justify including him this time around.