From new Cats gatekeeper to a Deise goal surge - what stood out
Kilkenny manager Brian Cody has always regarded full-back as the most specialist position - he rarely tampers with it and is willing to make big sacrifices to ensure authority there.
Thus JJ Delaney, one of the game's greatest wing-backs, was seconded there when Noel Hickey was absent and then departed, and now Padraig Walsh is following a similar path, away from his more natural prairies at wing-back, to fill a void that was glaring in last year's All-Ireland final.
Tipperary's inside trio took their markers for 2-15 from play that day which commanded urgency in the off-season.
Walsh has played all five League games at full-back and hasn't looked out of sorts. Conor O'Shea has been to one side for the five, Paul Murphy restored to the other corner for the last three, none of which the Cats lost. It's a work in progress but it is coming along quite nicely.
It took Mick O'Dwyer to head off on his travels into Leinster before he was really appreciated for the great manager that he was. One thing to land so many All-Ireland titles with some of the best footballers ever but another entirely to achieve tangible success in counties where it has been absent for so long.
We're not comparing Micko to Davy Fitzgerald by any stretch but what this league has underlined is how Davy can make an instant impact with a team - an All-Ireland final appearance within months in Waterford, an All-Ireland title within two years in Clare and now promotion from Division 1B where Wexford had been stuck for five years, winning just 12 of their 25 games and failing to beat any team of real substance. That's progress.
Waterford scored just one goal from five matches in the group stages of last year's league but, in this campaign, they have increased that tally six-fold. It hasn't been a conscious effort but with the Bennett brothers and Patrick Curran they have to be that bit more expansive.
The concession of 3-16 against Tipp was out of sync with the parsimony of the Cork defence up to last weekend but they still finish the group stages with the third best defensive record of the top six teams, coughing up 7-81, a significant improvement on the 9-118 scored against them last year, the highest total since the six-team division was brought in.
He has the players to do it so Tipp manager Michael Ryan hasn't stood on ceremony when it has come to making early changes. In three of their five games Ryan has made tactical decisions to take out players before half-time, Seamus Kennedy against Clare, Aidan McCormack against Waterford and Michael Breen against Kilkenny al making way.
Perhaps it was frustration but Limerick manager John Kiely let fly over Sunday's defeat to Galway over apparent uncertainty over the structure of the leagues.
It's become a constant theme, led by Waterford manager Derek McGrath who pointed out the anomaly of the 10th best team making league quarter-finals.
On Sunday that anomaly was highlighted by the fact that Offaly, courtesy of two-point win over Kerry, their first of the campaign, earned a shot at Tipp. Hardly the most onerous task for such reward.
It changes from week to week but it seems that the trend very much in vogue for the last two seasons is on the wane.
Wexford used Shaun Murphy in the role effectively while Dublin deployed it too from time to time, but Cork and Clare didn't touch it while Waterford were more relaxed about its implementation.
Dublin have their foot on the trapdoor to Division 1B but Eoghan O'Donnell has emerged as a full-back of real substance in this campaign. Defensively, Dublin should be able to compare well with most this summer.
We can't point to any particular statistic, except to say they are becoming more noticeable and prolonged. The more congested midfield area contributes obviously, as does the complete absence from a ground-stroke in the game these days, but so too does the quality of pitches in February and early March.
No forward continues to influence a team as TJ Reid does with Kilkenny. Last year he contributed 54pc of the Cats' five-game Division 1A total; this year his 3-39 from their 5-85, 1-11 from play, works out at 48 pc. No one comes close to those figures.
Waterford manager Derek McGrath has said that his side are delighted to have a booked a league quarter-final date with Galway next weekend, but that realistically, his side were probably not completely honest in just how worried they were about avoiding a relegation play-off.
A crossroads moment, one of those sometimes billed as a moment of truth, faced Cork hurlers in the Munster Championship against Waterford two years ago. Five weeks earlier Waterford, having skipped out of Division 1B, outplayed them in the league final and reheated the debate around Cork's head-wrecking inconsistency. Not just game-to-game inconsistency but within games themselves; half to half, quarter to quarter; they could change in the blink of an eye.