The complete list of mechanical changes can be looked at here, as well. Player feedback has already brought up that this might impact the ability of players to really manage alts as well as the amount of bank space many players bought just to keep up with refinement; the changes to Bonding having less overall uptime have also been sharply negative. Of course, none of these changes is live yet, so you can feel free to join in the feedback thread to voice your own opinions.
Neverwinter’s current system of refinement? The developers certainly aren’t, which is why the system is being massively overhauled from top to bottom and streamlined. No more doubled refinement weekends, no more managing a huge system of items in your inventory just to manage what you’ll need for refinement, no more making Bonding the be-all and end-all of refinement. Now the system will use one unified currency, the item requirements have been vastly reduced, and doubled refinement weekends are going away forever.