New coach Brian McDermott will send his players back to work after seeing them crush Wakefield Trinity Wildcats 40-22 in their opening pre-season run-out on Saturday.
McDermott was pleased with much of Rhinos' performance, but admitted they still have some hard work to do before their opening engage Super League fixture in 41 days' time.
He felt Rhinos showed "a lot of cohesion" in the first half and wasn't downcast at the final quarter, when Wildcats scored three unanswered tries.
"That gives us a coaching tool," he said of his team's late slump. "There were some things that weren't quite right towards the back end of the game.
"But we changed the personnel and put some of the younger fellas on. There will be things to learn from.
"We will use it, but there's no disappointment from that. The main part of the game, I thought was good.
"We are in the middle of pre-season, so we won't be getting too carried away. We have got a bit to go yet and Wakefield had some fellas out themselves, they didn't have a full-strength team.
"I am pleased with it, but I'm not jumping up in the air. "
Centre Kallum Watkins came through his first full game since last March unscathed, following a knee reconstruction.
"He has got some things you can't coach," said McDermott. "I thought Kallum and Ben Jones-Bishop worked really well together.
"Kev Sinfield and Rob Burrow I also thought went well together and
Brent Webb was a big part of what we did
"When we took him off we seemed to lack a little bit of cohesion, so that indicates how important he is."
Aussie prop Ben Cross made his Leeds debut off the substitutes' bench.
McDermott admitted he hasn't seen much of Cross in match action and he said: "I don't know if he will give us any more than what we saw (on Saturday), but what I do think is he will give us that every single week – which is invaluable.
"He looks to be a straight up and down type of player, but reliable with it. He seems to have settled in."
Second-row Jamie Jones-Buchanan suffered an injury to a knee cap in the first half and will undergo medical tests this week.
Speaking after the game, the player said he is confident he will be fit for the start of the season.
Wildcats coach John Kear felt his team could take positives from their opening trial, particularly in the final quarter.
"I thought the players showed great spirit and resolve in the second half," said Kear.
"Obviously, we came up against a Leeds team who were very sharp and very quick and people like Kevin Sinfield and Brent Webb showed thier quality and their class.
"We have got to be realistic, but the pleasing thing is the players hung in there. They didn't throw the towel in and they kept working to the very end.
"Some of the young lads set a pretty significant mark towards starting against Castleford in February.
"They have got enthusiasm and spirit and they can make a name for themselves this year.
"I was pleased with the majority of the youngsters, I thought Michael Korkidas put his hand up and Tommy Lee showed some promise.
"I think if he can stay injury free he will be pretty significant for us over the course of the year."
Wildcats have a concern over Aaron Murphy, who suffered a suspected fractured thumb.
"That's the down side," admitted Kear. "But there were plenty of plus points."