Hamlet Defense, more RNG? Discouraging.

[Endemerrin]

RNG is here to stay. Without it the game wouldn't have any longevity.
RNG keeps players with the competitionist mindset unsatisfied with their accomplishments. They will continue playing and paying because they never have it all, and they'll never have it all because they aren't incredibly lucky.
Of course, there's always new content being added, but through RNG the developers can slow the rate of content without losing subscribers.

On the contrary, you make the RNG low and it drives away your dedicated endgame players because they get fed up with getting absolutely no reward for all their effort - while others groups might be having significant luck and receive ten times the amount of loot you've received for ten times less work.