~snip~
Meaning it took me 109d 4h 59' 34" in order to reach the threshold for Sr. Member rank (and, respectively, I obtained this achievement with 56d 8h 45' 15" before the date when my activity would allow).
In addition to my previous
post, today at 17.24:21 I just reached the necessary merits for becoming a Hero, while I'm still a Full Member, having a merits vs activity ratio of 2.12.
As my first merit was received on Friday, Oct. 25th, 2019, at 11:55:50AM, it means it took me only 163d 5h 28' 31" to earn the Hero threshold, earlier with 240d 7h 8' 59" than the moment when my activity would allow me (I'm supposed to reach 480 activity on Dec. 2nd, 2020 at 03:33:20).
Given the above mentioned details, I still believe that the rank-up should be a bit more difficult.
Your above mentioned details doesn't effect ranking in anyways as you would still need to wait for your activity to reach 500 to become a Hero. I mean activity and merits together gives desired effect to the ranking system of putting both efforts and time as an criteria, leaving no need for an edit in the ranking system or making it more difficult until.