Some time CM and the casino need to have something new to test the waters, that's why there is a wagering contest after the 6th round of the slot multiplier contest. I am not sure if there will be new wagering contest but looking at the number of participants, it is less than the slot multiplier contest so I think it has smaller chance to continue. Hopefully the slot multiplier contest will be continued or maybe another new contest will come later.
Little Mouse is a very experience manager with his capability of running from signature campaigns to different types of contest for many casinos so he know what are good, what are bad and even what are best.
Testing the water is more like an initiative from EarnBet.io company after their discussions with Little Mouse for possible "best" contest types to run. The manager can recommend some best contest types, and the company must use their marketing fund for "testing the water".
Soon we will know how they feel about the wagering contest and whether they will host more round with this contest type. If they host more rounds in the future, it means their "testing the water" result is good.