I didn't like the first movie. A whole lot of it just didn't do it for me.
But, to me there's always going to be something inherently silly about TMNT. There's always a need for that level of humor because we're talking about walking and talking turtles.
This trailer showed me a whole lot of that level of humor and I think it works. So much better than the darker tone they tried to go with in the first movie. This one looks to fully embrace the silliness of the concept and just have fun with it.
It looks like it'll be fun. That's enough for me.