With little change in body composition seen in senior players, perhaps time could be better spent on other aspects of the sport to improve playing ability. For example, resistance training could be scheduled 4x/week. Two of those days could be “low” stress days where simple hypertrophy work is performed compared to strength/power work on the other two days. One or both of these “lower” stress gym sessions could be replaced with contact skills, ball skills, or top-up conditioning.
Day 1: Contact/wrestle skills (e.g. underhook fighting, clamping, approach to tackle).
Day 2: Lower-body strength/power.
Day 3: Hypertrophy work for smaller players, top-up offfeet aerobic conditioning for others + ball skills.
Day 4: Upper-body strength/power.
This way, extra time is spent on important facets of the game and will allow you to work more closely with sport coaches, hopefully building a stronger relationship between the S&C and sporting programs.