It would be a lot easier to manage conducting the Paragon mission if it rolled over at downtime, allowing completion anytime the next day, rather than having to keep track of when I last managed to do the mission on a character.
Currently it can lock you into undesirable times, i.e. Forgetting to do a mission on a day when it rolls over and so you complete it as soon as you can and it is at 11PM that night, from that point forward, the earliest I can do that mission again will always be 11PM unless I skip a day.
But if you set the rollover to after the downtime reboot, it’ll always be available for that daily completion without locking people into specific times of the day. It’s basically a huge QoL type fix.