I was looking forward to this. The LegoMovie was an unexpected joy, there’s more potential to mix franchises here than anywhere else, and word of mouth was good. But honestly, I don't think this matched up to its predecessor. It lacked the exuberance and anything-goes freewheeling nature of that film, and had more one-note humour. Still, for casual and hardcore fans alike, there was a lot to enjoy here.
Riffing on the Batman of the first movie, all self-referential boasting, claims of being awesome and deep emotional repression, there were a whole lot of great points here. Having a full roster of Batman villains - and then one-upping them with the big bads of numerous other franchises - was a whole lot of fun. A small scene with the Justice League gave some laughs too. The big action setpieces were great to look at and often very inventive. And the strange thing about comedy is that the more overt, exaggerated and silly you make a character's hang-ups, problems and angst, the more directly you can switch gears to actual pathos and touching character moments. Making the film essentially about how Batman's bravado is all a front for his yearning for family and companionship makes that very easy to do - especially when you pair him with a Joker longing for acceptance, where the joke is that the protagonist-antagonist relationship has a lot of parallels with a romantic relationship.
So all in all I wanted to enjoy it. I got most of the jokes and references and it often raised a smile. Because it's a comedy it doesn't really matter that loose ends aren't really tied up, like why the Joker didn't have to go back with the rest of the baddies. I loved the little touches like Bane sounding like the movie version and Robin's costume origin. It was also nice to have Barbara Gordon written so strong and capable.
But in all honesty, it wasn't what I'd hoped it would be. Everything was superficial by design, so I ended up not connecting with anyone on the cast - which wasn't the case with the Lego Movie. There was no way to prevent Gotham getting totally torn apart so it felt like there wasn't much more at stake after that, nor that the characters particularly cared about any of the carnage in any case. And while the Lego Batman character was great as a side-note to a wider story, he wasn't really that fun as a protagonist.
Not bad by any measure, but just not that fun either.