I'm not familiar with many of the Briz players. Their 8 has only got 1 previous appearance.
Front row is decent enough - Jake Woolmore and Yann Thomas have pretty much swapped the 1 and 17 shirt for the last four years. Will Capon 22 y/o hooker, stocky, good ball carrier, maybe not the best at throwing, been a back-up to Thacker and Bryan Byrne (Irish hooker signed from Leinster a couple of years ago) for a few seasons now.
Back row, Heenan a bit of a journeyman, played for Connacht for a few years, can play across the backrow. Sam Jefferies had a few years out and came back, good season last year saw him called up for England, tall, decent carrier. Magnus Bradbury is a Scottish international (19 caps), came from Edinburgh this season, powerful and hard worker. Sam Lewis was released by Worcester this summer and joined Bristol after a trial, typical Welsh 7.
Sam Bedlow has been around the team for a few years, 27 but struggled with injuries, can be a bit of a liability discipline-wise. Jack Bates 21 year old winger, former Eng U20, came through last year, fast. Rich Lane came from the Championship last year (from Bedford, Jersey before that), primarily a full back but also plays wing, solid under high balls and a good step.