Right now, you get back your full concentration in 4 days 4 hours. If you would bring the cap up to 1500, that would be 6 days 6 hours.
Why? So degens with 100 alts can reduce margins on conc even more? You can’t even be bothered to log in for 5 minutes twice a week?
Never had this problem in DF when i had a surplus of mettle, but concentration is far more limiting when it comes to my availability to play. In DF i could collect mettle for weeks (at MY convenience and schedule), and when it suited me i could burn it all by crafting in town for hours. With concentration, i can only craft a few things then have to wait, which isnt at all convenient to my play schedule.
IMO if you have full upgraded prof gear AB’s are using rank 3 mats you shots be able to craft all the rank 3 pots and flasks you want. The prof gear feels useless.