How has Buffalo’s ST’s changed?

In the off-season, the Buffalo Bills hired Bruce DeHaven as their special team’s coach, replacing the iconic Bobby April, who is now in Philadelphia. How have the Bills special teams change under DeHaven?
“Some things are the same, some are different, Bobby’s return game is similar to what we run,” said Mike Westhoff. “Bruce has the things he does. Bobby probably wishes he was still in Buffalo with all the guys he had. [Bruce] inherited a really good outfit. They have good return guys. That guy (Roscoe) Parrish is a very good returner.”