Actually, there was a lot of unhappiness with the new rank
system. On one hand, it gave more scope for promotion , which under
the old rank system , due to its limited number of ranks, could not
provide.
But the problem then became that it was difficult to reach WO rank
in the new rank system, as there were many intermediate rank steps.
Example , for comparison, old rank system, between SGT and WO2,
there was only one step (SSG).
Now, between 3SG and 2WO... there are 2SG, 1SG, SSG, MSG... 4 ranks
in between.
Doubt if there will be a new system. The organisation is now built
around this and it cannot go backwards.