I would argue that Booker wasn’t necessarily “hiding” a poor O-line but instead allowing a decent O-Line to get away with “lazy” run blocking.
The talent is there but they were spoiled the last few seasons by a running back who had amazing vision and could take even the smallest hole and make a big play through it.
They’ll have to be much more focused and assignment-sound this season.
They have the ability. They just need to get focused and execute, sooner rather than later.