we have much different definitions of success
Last season Vanek and Pominville dominated together while the team stunk and racked up Ls. Eventually they split up and the team started to rack up Ws. I'm not saying it was a total causation there, but splitting them up is certainly not a detriment to winning games. Vanek-Hodgson-Tropp, Leino-Roy-Pominville, FES were the lines, with FES getting the easier match-ups on a regular basis and tearing the ice up.
That basic set-up can be done again this season with Vanek-Hodgson-Ott, Leino-Grigorenko-Pominville, FES. I'm not saying it's necessarily better, but if secondary scoring does not step up what should be done? Just keep watching something fail, or depend on Vanek getting 5 pts each night? It's not an absurd option, and you can't claim that it is.