I think, I disagree with [Theusedfan]'s opinion, although I respect her's/his.
I am not the hugest Paramore fan but they are one of the bands that are listed in my goodmusic list. I think, they underwent great musical transition.
From awkif, they gave the fresh paramore style, the style which made their foundation too. You know, the awkif is more reaching out in terms of 'dark' emotions. Riot is poppier, more happy and less dark. While bne is kind of combination of both yet more influenced with the roots which is awkif.
This song in particular, is my favorite paramore song ever. The gradual rise and low which draws the emotion, too. Filled with hope, faith, regret, and sorrow but much with love.
But I have to agree that it may sound a little boring if they continue with the slow/rise/high/low/smash/gentle kinda pattern with their songs. I think they need more experimentation with different styles. Like trying to add more piano element, or to make it more fresh why not have a song with josh singing a verse or the chorus alone and some kinda duet.
But, brand new eyes is worth the wait! A fantastic album. It's just what I needed yet I know we are searching more from them. Maybe, a year or so, a new paramore will soar!