Judging from the ORIGIN player tip page there are some features that lie ahead of us.
1: According to the guide, there will be HK's for sale, either for crone (4 and 8 hour ones) and bossdrops for ones up to a duration of 30 days
2: There will be a transcendence system applied once you reach 100. You'll be able to buy extra stats using crones + xp. So you can keep perma grinding to improve your character's stats
3: Last but not least, as you noticed you have 5 possibles, regenerating 1 possible takes 2 hours. The vengeance system is changed as well, just like porting and dieing (when you die you lose crone) the charge on venging people increases with your lvl as well, up to 7 mill crone per venge at lvl 100.
If you want to see all of this for yourself:
https://origin.playrohan.com/Guide/Guide
PS: (go to ''System'')