Wasps director of rugby Dai Young believes the club's new signing will make them a stronger threat next season.
Ten new faces are joining the ambitious Premiership side including Frank Halai, Jimmy Gopperth, George Smith, James Johnston and Dan Robson.
Wasps missed out on the play-offs by finishing in sixth place but have secured Champions Cup rugby for the 2015/2016 campaign.
Young however still expects the sides around Wasps to be as strong as ever.
“I feel like we have recruited well ahead of the season and the players coming in will make us significantly better next year," Young told the Wasps website.
"However, the sides around us have also brought in players who will help them improve. I don’t think there are any sides at the top end who will stand still. Those same sides will be up in and around the top end of the table.
"Northampton once again look set to be very strong, as do Bath. Saracens seem to be immovable at the top end of the league and there’s no doubt they will be up there again this season and Leicester, despite having their doubters, seem to do the business every year.
"This year we have to have Exeter in our sights but we will also come under pressure from the likes of Harlequins, who have recruited some big names.”
Young also believes the absence of players such as Joe Launchbury, James Haskell and possibly more at the Rugby World Cup will have the club's younger players a big chance to make an impression.
“The players are now all back in and are going through a testing period before hitting a fitness block, which will be led by the conditioning team.
"With the delayed start due to the Rugby World Cup, this period is a great chance for the players, especially the younger guys, to make some good progress with their physical development. I can’t think of another time that they will have an opportunity like this.
"The players will all then get a week off before we come back with a focus on our pre-season schedule leading into the opening game of the season.”