I don't think you find a week point. Players can play on NT very long, skills starts dropping at 33 (maybe slightly at 32), I think best players can play on NT up to his age of 35. If you look at our roster the oldest player is 28 (still training – last season 4 pops, we will see how many this season) and second one 26. Our NT is still quite young. To have about 20 great players you need average of 2 in every year starting from age 25 to 35.
The problem of our NT is somewhere else but don’t have direct correlation to my philosophy. We have very few well trained players with 10 or 10+ potential and it looks like potential 9 could be problem in near future for top level of NT’s. And second problem is that we don’t have enough managers that are ready to train these players for our NT, second part of my philosophy is Czech NT for players only from czech teams (at the moment all players from our roster play in czech teams, except from 18 yo, but there are some players near NT in foreign teams).
The point is that,at 32 years old,your player will have the same primary skills of the other national teams?
Because if you can't have higher primary skills before your player become older,you will however always have a disadvantage that I don't know if you can compensate.And another problem,is that you have to findo manager that want to train players forever,not stopping at 25-26 years old,and I don't know if you can find that
However,I wish you good luck,but I don't see your plan working as in your desires