Typo: "longer then" -> "longer than"
Minor grammar: "built-in" -> "built in"

Either of these are correct, so I chose the second one:

* "a bunch of built-in features"
* "a bunch of features built in"

Reference: http://www.getitwriteonline.com/archive/042703CompWdsHyph.htm

> This is a government-mandated program. 
> The program is government mandated.