FA isn't stacked at all. Everyone will have 2 QB's on their roster. Nobody after 1-12 is really producing outstanding numbers. And to be honest, only the top 5-6 really put up monster numbers last year. The rest of the positions are fine.
The WR/RB are all gone. That's 18 WR's and 12 RB's and you still have 6 flex positions to get drafted and bench players. There isn't a ton of great TE's and K/Def is the same.
2 QB's doesn't make much of a real difference. It just inflates the scores. 2 starters or a bench and a starter is the same number. Every team will still have 2 very good QB's and will only need 1 pickup anyway since their starters will have different byes if drafted properly. It only makes a difference in 1 week unless you lose a QB for an extended period and even then, you won't find one producing like the starters on other teams regardless.