Our offense is outdated

All year I've been noticing some of our pass plays we're running two or three man routes. We're also lacking using Latu as the lone tight end because we honestly need a vertical threat at tight end. Latu's blocking has also been horrible this year. The two back set with McClellan and Gibbs has not worked all year and is taking speed off the field by removing a receiver. Every week we're saying no one is getting open but there's a reason to that. Our routes take too long to develop and no pre snap eye candy to confuse the defense. We're putting up points but it's not because of our offensive scheme, its because of great individual effort. We rarely run slants and that would definitely help our offense.