They may still do the same thing here. Match 1 at Slam, matches 2-4 over the following SD's, then match 5 at the next PPV.
And I, for 1, have been enjoying the Cena/Book matches/segments of matches over the last month. I've certainly enjoyed the stuff between these 2 more than Cena against any combo of Reigns/Suzuki/RVD. They seem to mesh well, and Book looks motivated again. Granted, they haven't been 5* masterpieces, but I've found them enjoyable. As long as they don't make them go 25 minutes every night, the matches should be fine.