New players don't play well with the  team when they are   1st bought , they changed that, it has been said. And the only thing that matter is skills and youth in this game  experience means little to nothing in this game. That not a opinion of my own its out  the Gm  mouth .
What I bolded above is utter bull and I challenge you to show where a GM said that (though, of course, it doesn't have to be verbatim as many of the GMs don't speak English and sometimes it's questionable whether you do. But as I am nothing if not a conciliatory fellow looking for intelligent exchange of ideas, I'll relay a phrase an Argentinian friend of mine once used that simply fits here: you talk as if you are the owner of the true.
 If youth  player  has great skills and low exp he  will get  picked 8-10 times before  a older player at 30 yrs old but high exp with same skills. Because of  longtivity.. It would be foolish to buy a older ball player because exp?  skill and youth potent is   what make BB  world go around.
If they were the same price, sure - I'd find more value at that point in the young guy. But it's not common that you'll find a 23 year old with good skills available at the same price as a 31 year old with those same skills. And by it's not common, I mean it's simply not going to happen. 
If it  an opinion of yours  then the Nt  managers/ nor the managers of BB are listening to it.. All I see is  high skilled  youth with little  to no  exp. Exp mean little to nothing in this  game. Yes it good to have but same times it mean  nothing, who  you know pay for exp of  old players. Comical at best. my opinion, ha  tell me another hurley please  I got time.
If you've got time, why don't you look over the NBBA's rosters and sort them by salary and see how many players under 25 you find that have a salary of 10k or more. The NT's a completely different and irrelevant comparison because those rosters don't have acquisition costs nor do they have to be concerned with profitability, so that's always going to be a race for maximum skills. But I can't imagine you'd underestimate the effects of experience, since you had so much time playing against bot teams with low skills but high experience in V.whatever and it took you such a long time to promote.