IIRC they increased the roster for injured players. And revised the IR rules.
Years ago teams could move players on and off the IR at will. A player has a sore hand, put him on the IR and keep him. Sign a player you like, see what he can do. If he does not play well, bring back the IR guy. Or swap them, you like him, but have an injury, like poked in the eye. Bring back a guy on IR.
It was not uncommon for a team to have a list of guys on IR longer than the current PS lists and then some.
So the NFL, increases the roster, at the time to 51. Then changed the IR rules, once on IR, they are on it for the season. The extra players were for those injuries that would heal in a month, so they had a player that could step in. so the strategy here is, who you keep at what position. Then when the player is ready to return, he could at any time. This let the team protect the player, no release him, and also did not allow the team to stash 10 players to recall at any time.
I think they have a good set up now for the most part.
The PS was created, and was originally only 6 players. Then to 8, now 10. I think this is a good number. but would like to see them allowed to protect 2 to 4 players. As to matching offers, not complete protection as they can't go to any team. just designate to match.
So what I would like to see:
up to 53 players now, so essentially 7 players as a mini IR list if be. Would be nice to increase to 55, and 47 active game day.
IR for the year, with a designated to return player. But I would like to see this increased to 2 players.
PUP & NFI list, but I think they could relax the rules on this some too, kind of like a short term IR, but limit those numbers and time.
10 man PS. be able to match offers on 2 designated players. Would not mind seeing 12, or increase the roster to 55 and allow 2 players each week to be included as to an active roster on game day.