Kerry, as expected, claimed the Division 1 football title on Saturday, but the displays of the three players on the '40 was what caught the eye of Vinny Corey in the win over Donegal.
With one eye on their provincial quarter-final against Tyrone, Donegal fielded a weakened side and in the end were no match for the hosts. Kerry ran out 14-point winners to regain a title they last won in 2017.
For former Monaghan star Corey, the performances of Paul Murphy, Peter Crowley, Gavin White stood out.
Speaking on RTÉ Radio's Game On, he said: "They have seen to have added more aspects to their game and the most notable one is that power they have coming out of defence.
"On Saturday, Gavin White was awesome, as was Tom O'Sullivan and Paul Murphy. I don't know whether Kerry targeted them during the off season and said 'you are the smallest, you're are going to have to bulk up'.
"Now they are looking a lot stronger, they are breaking tackles and driving forward. They are setting up scores and are hitting teams on the counter-attack."
Corey was equally in admiration of their much-vaulted attacking division
He added: "We know David Clifford, but Tony Brosnan has added something. He kicked six points on Saturday. They look very threatening and they still have Paul Geaney to come back. Stephen O'Brien only came in for a short while on Saturday.
"They look in very good shape."
Kerry's focus will now turn to Cork in the Munster semi-final on 8 November. To further underline their rude health in advance of that clash, the two-time Ulster winner says the squad "have many tools in their box" to deal with any opposition.
The Rebels may set up with a more orthodox approach at Páirc Uí Chaoimh, with Corey ominously warning that "Kerry could turn around and blitz Cork in the first half".