It is streamlined to hell. There are a crazy amount of flaws.
First off, the hallways in Tartarus are too wide, removing the risk/reward and decision making old Tartarus had when you were exploring it. There is no skill to fleeing anymore its easy as hell now.
No mechanics like being tired, reversing social links is really hard to pull off etc. it is just dumbed down a lot and simplified.
But my biggest gripe with it is honestly how there was basically nothing done to make Tartarus more engaging and yet people in the early days were on this weird agenda to say it is better to explore now. How? If anything it felt way more stale in Reload