I definitely think the way they mishandled the Echo era, the decision to have Happy be her lead single (and they did again for her 3rd album, Glassheart, by picking Trouble as the lead single), them quitting on the album as soon as Happy under-performed (it's disappointing they didn't do more for it because that album had some outstanding songs). The worst part was her being on hiatus for three years, only releasing the Hurt EP and the fact that still did well showed that Leona Lewis had a audience waiting for her.