"In case you would have your reservations on the Nexo Knights franchise, I can confirm to you that you'll love them. The likability of the characters as well as the detail of the set make this an instant-classic.
And then I didn't even mention just how fun the build is. Did this together with my son who is almost 5 years old. Although clearly too difficult for him to build alone, the way the set came to be brought us hours of fun in which he relentlessly wanted to do as much of the building himself.
Then there's the iPad app Merlok 2.0 that even extends the building pleasure into the digital realm, and lets you scan your Nexo knights shields for extra powers. The app itself quickly becomes a tad too difficult for smaller kids, but that doesn't affect in any way a top class set in a new and exciting universe.
Because the characters are that distinct, I could see this gaining momentum and would advise Lego to deepen the already existing Nexo Knights characters over adding many more.
Thanks Lego designers (hardware and software) for an excellent product!"