"We have had some very good individual performances and I personally feel that there are players on this tour who should be going to the World Cup," said Mallinder, who is also coach of Zurich Premiership side Sale Sharks.
Mallinder's input will be valuable as England senior coach Clive Woodward names his 50-man World Cup training party in the coming weeks.
Among those to have impressed on tour are fullback Iain Balshaw, scrum-half Martyn Wood, fly-half Dave Walder and prop Mike Worsley, as well as a host of star performances in the Churchill Cup, which was won by the England XV after beating Canada and the USA.
Speaking after Sunday's game, Mallinder said: "To get 55 points against an international side like Japan is a credit to the team.
"It's certainly been an enjoyable tour and along the way we have played some good rugby.
"In most of the games we have had to work hard for the wins, particularly in the first periods, but the class of the side has come through.
"It has been a very good experience for me and I really enjoyed working with [Newcastle No.8] Hugh Vyvyan, who has been a wonderful captain, the players and an excellent management team."