I agree with change but not with this one.
Stamina increase from superior would mean, teams with 5 stacked starters who play every match could train form and have stamina from 7 nutritionist.
It's not so easy to balance... 7 nutritionist gives now 1-2 pops in season. Which is totally fine in my opinion. I'd say keep that, 6 nutritionist 95% decrease in losing stamina and superior 75%
Or combine it with now useless rehab building in arena somehow.
I had lvl 7 for 2 season and only few players had a pop.
It is absolutely not 1-2 pop a season. This wld be ok for me
But
I read something like a pop every 4 season.
S52 CUP WINNER S66 BBM11 winner "non dire gatto se non ce l'hai nel sacco"