How about instead of risking making 19yo too powerfull (lets remember how much 1 year or training costs) and increasing their starting TSP we instead give them higher cap on one or two skills?
In my opinion 19yo have to be overall slighty worse than 18yo but right now they're just trash mostly.
Imagine we give 19yo the ability to have 2 skills at maximum of 11-12 instead of 9. You could find some hidden gems in the list, like 11-12 is/id on a small guy or jr/od on a big.
Yes, their starting skills would suck even more but those extra few levels in skills that are hard to train would:
Increase their value a little bit
Make people spend scouting points on skills reveal
Add more strategy to the draft (going for unique 19yo from higher picks instead of 18yo, since they will be first picked)
Maybe unlock a little bit more strategy in u21 (really doubt).
What do you think?