The new Reputation System is significantly more complicated; comments are unnecessary. It's already clear what the intention was when implementing the upgrade. If before, it only took one mouse click to express an opinion, now this action has almost turned into writing a post. As a result, people will simply stop using the Reputation System out of laziness and because it takes too much time.
And where can you now see if someone has given you a reputation boost or not?
I don't know the actual difficulties with the old Reputation System, but the forum worked fine with it before. And the new Reputation System will eliminate itself within a month because people will stop using it due to its complexity. Then, active forum members will lose their incentive, and that's it. The forum will fall apart. This is, of course, the worst-case scenario, but I wouldn't want to see something like that happen :D
This is my personal opinion, but I think it coincides with the opinions of many other forum members!
КиШ.