SDMB Fantasy Football DYNASTY League: Year 14

What is the history of this league with IR slots? Rosters feel deep enough that I would think a single slot would be sufficient for most even if it meant carrying a player on IR for a few weeks in the active 25. I think making the protectable player group much larger reduces one of the only pressures for player movement beyond the rookie draft, which speaking from all my depth of dynasty experience sounds like an ungood thing.