does anyone have all 18 year old players

[Arthur Andersen]

No, because you won't be able to build a strong team with 18yo only, unless you invest a lot (really a LOT!) into all of them. But then you will be over%'d and you will face equally strong opponents, highly likely from the upper levels...

It is a HUGE inefficiency. One or two 18yo players per squad max. Though better keep them on the bench for a season or two, train their whites and then put into the mains squad when they turn 20...

[Ποσιδονας]

No, because you won't be able to build a strong team with 18yo only, unless you invest a lot (really a LOT!) into all of them. But then you will be over%'d and you will face equally strong opponents, highly likely from the upper levels...

It is a HUGE inefficiency. One or two 18yo players per squad max. Though better keep them on the bench for a season or two, train their whites and then put into the mains squad when they turn 20...

if you return after some long time in the game, having an abandoned team with 30+ players, you could start a new team with 11 18 y.o. players and win everything (because your opponents are ****).
1000 greens are enough to build them with enough quality.