Downside of BBCAN4 is that it is kind of Tim & Nikki Ft. BBCAN. There wasn't necessarily blatant manipulation going on but it was pretty obvious production wanted them to go far. Reaction to the series is pretty mixed... I personally enjoyed it as it's a more character driven series. I loved watching Tim and Nikki navigate the North American format.
A good friend of mine was obsessed with Tim... So much that she ended up watching his original season. She had a lot of downtime at work and she'd always have to explain to coworkers what she was watching.
I'm disappointed that Tahan isn't on this series as I know she was a fan of BBCAN.
Speaking of BBCAN4 there was a rumour that season 5 was meant to bring on more international HG's but chose not to purse it further due to budget cuts... If Seven are going to move ahead with the half-stars format perhaps they could bring in a mix of former American, Canadian, and UK HM's for 2023?