Honestly, the only period where the show felt completely rotten was post-Iris in 2013. That game felt like a catalyst to an absurd level of caution shown by nearly every contestant. The game felt like a simple game of just getting to the 3rd offer (even though the 1st two offers were often the most generous of the game
) and then weighing up whether they should deal then or go on and DEFINITELY deal at 8 box regardless of the offer (unless of course the game was a total trainwreck). And with the show still having an hour long time slot for every game, and filler used a lot of these games was so tedious it felt like a chore just to sit through an episode.
Yes, there was Marlene's and Paddy's games, but they felt like total flukes given they were both surrounded by extreme caution and poor offers. Granted, we should be thankful those 2 had by far the strongest boards during that era, for if virtually anyone else from that era had those boards there's 0 chance those games would be in live play past 8 box.
Things started looking up in December somewhat with Nenad's and Gwyn's games, but it still felt like the show was completely dominated by uber-caution, especially in the Christmas specials where every game was either a trainwreck or an 8 box deal.
As much crap as we give Box 23, it's absolutely what the show needed at the time. It was a subtle way to get players thinking they have a safety net even of all goes wrong, and gave some players the needed push to decline a poor 11 or 8 box offer.