I ventured into the hellpit of the official EA forums. Apparently the dev team are "fully aware" of the "dynasty issue".
Another roster update in a few weeks might fix it. Who knows?
There are three main problems and the first two are serious oversights.
1) Star Players in the AHL. Criminal. Especially as it happened before. A mode ruiner. It's not just one or two. An all-star teams worth of guys will be shunted.
2) Guys like Eberle and Seguin are underrated. It will be hard for them to get realistic point totals in breakout seasons. These are the players that need to be boosted a little. Having them improved makes the rosters fresh.
3. New AHL players missing. According to EA they need to sign an agreement with the AHL that will in turn let EA put them back in the game.
This may happen in January.
As an offline guy, I'm going to delete the rosters and do it all manually - right from Modano to the Red Wings.