Munster are working towards making their 16th man the vital difference in the final round of the Champions Cup pool matches.
They will have installed extra seats at Thomond Park in anticipation of a sell-out crowd coming to the showdown with Exeter Chiefs on January 19th, taking capacity up to 26,267..
Pool Two is unique in that all four clubs have a legitimate shot at qualification for the quarter-finals.
First-placed Munster and bottom club Gloucester are separated by just four points.
Moreover, the pool has been defined by the two away wins by Exeter Chiefs and Gloucester at each others' house as well as Munster's draw at Exeter and Castres solid form at Stade Fabre.
The fallout from all that happened in that ugly drawn match between Munster and Castres has been further muddied by the French side's Rory Kockott's three-week ban for putting his hands in the eyes of Chris Cloete.
The disciplinary committee upheld the citing complaint, deciding it warranted a red card in finding Kockott made contact with Cloete's eye area.
It was decided that the act of foul play was at the low-end of World Rugby's sanctions and four weeks was selected as the appropriate entry point.
The scrum-half's guilty plea convinced the Committee a one-week reduction was in order.
Thus, Kockott will be free to play in the fifth and sixth rounds of the Champions Cup.
Castres' Marc-Antoine Rallier has been suspended for one week for what the Committee deemed was a tackle on Peter O'Mahony worthy of a red card.
In addition, Perpignan's Adrea Cocagi has been banned for nine weeks for striking Connacht's Matt Healy with his shoulder at Stade Aime Giral in the Challenge Cup.
He refused to accept the incident was worthy of a red card, pleaded not guilty to the charge, and received just a one-week reduction on his initial 10-week punishment.