I think the balance is/was very good (apologies, I have not yet tested the new client). Progression points being as valuable as trias means three things: First, it means that you must have killed a lot of monsters (i.e. had lots of practice-which makes sense before you can become a level stronger) and second, that it makes the game more challenging. Finally, having a limitation with progression points is a check on possible monetary exploitation.
Apologies, I have not played the new client, perhaps they are even harder to come by now, but I thought the old balance (3.010) was perfect.
Just my thoughts,
Xirius