McFadden told the Birmingham Mail: "The squad is going to be different, players are coming in, players have gone.
"The manager, I'm sure, will be looking for us to improve on certain things when we go forward. Try and make us more of a threat goals-wise.
"But at the same time we have to carry on doing the things that made us so difficult to beat.
"Hopefully we will have the same sort of application and commitment we have had this season in the future, going into next season.
"We need to set out the same sort of stall."