Actually this is returning to metroid roots. The first person perspective made really difficult to show just how agile and badass samus is, but all the 2D metroids have shown her doing some crazy stunts, even the prime games when they get the chance with cutscenes, so I'm not the least bit worried about too much "action" from the trailer. I'm more worried about how the gameplay actually is, how are they integrating 2D, 2.5D and 3D, and specially how is the immersion going to be and if they'll play with claustrophobic enviroments which are kind of a staple in the series.
Metroid is the perfect combination of exploration and action and no (main) metroid game has been subpar in that regard, but this is wild, way too different and exciting, I just want to know more! :P