There is so much discussion going on about the Merit system , whether it is good or bad, creating rich or poor, preventing account farming or not etc .
But in my opinion there is no suggestion given how to further enhance this system ,make it hard to abuse and providing the merit to the people who are giving Merit for good post.

First problem : No limit on the number of point awarded by an individual to other in a single post
There is  no  limit on  "Merits"  that can be  awarded by an Individual in a single post. It is quite possible someone will spend all  his "Merit" balance on very first good post and will be left with nothing to award any "Merit" on second good post.

Second Problem: No limit how much merit  a good post can accumulate  
Let me give an example we have 2 person, legendary A and Junior member B, A and B  both are giving good post to forum but A's post are better/more liked in forum. So everybody will give Merit to A and nobody will give merit to B. Now In this situation nobody will be advancing. (Apart from Merit Source, Merits are finite).

Third Problem: No clear guidelines  on definition of a good/constructive post.  
This is the most tricky question because every individual will have different taste.  Let me take the example of the Dressing style, every body will have different style , that's why we never say to everybody to wear same clothes but some guidelines are issued on that what is ok/not ok to wear in professional world.

Fourth Problem : Negative Trust score for abusing Merits
I saw some people got negative trust for abusing the Merit system, I think "Trust" is for trade/transaction purpose. Giving negative points in Trust for abusing Merit do not fit well.


My Suggestion to fix these flaws.

First Solution We can decide what will be the maximum number of points can be given by an Individual to a
                                   post , let say 10.

Second Solution We can decide that how much Merit a single post can accumulate, let say 50

Third Solution  Below can be some parameter  to decide on a good post.
                                   a) Is the idea/content is really new.
                                   b) How many individual might be benefited with the post or is it benefiting the whole forum.
                                   c) Claims of post look genuine  

Fourth Solution A new score of "Merit Smartly Used" can be created, For abusing the Merit a negative score
                                      can be awarded, A positive score can be given if somebody is first to Merit a post and post
                                      accumulated the maximum Merit  (let say 50)
                                     The individual having a good score of  "Merit Smartly Used" can be made "Merit Source " in
                                      future
                                
                Edited after Vod Comment.