Hopefully “interesting housemates” means they are not going in a sexy singles direction which I doubt they will.
I think it’ll be ever more important this season to have at least 3 housemates over 30 at a minimum as I’m gonna assume most of the viewers will be nostalgia viewers, especially with the way the promos are angled targeting the best moments rather than introducing the format to new viewers. I think the new audience will grow as the season continues, providing they can pull it off well.
I’d be satisfied if they went in a direction of a 2003, 2004, 2007, 2013 or 2014 cast, providing they allow for older housemates and cultural diversity, lacking particularly in the 10 series. And tbh some housemates from channel 7 would have been great for this format.
Looking back at some channel 10 series, some housemates were really dull, so hopefully they can add 1 or 2 big personalities to spice things up, if you put too many you get a shitshow like 2008.