A rather honest couple posts in the suggestions thread by Vlady on September 1st, 2016:
"The development is done. We are focusing on other projects now. I know that may be hard to accept, but that's the way it is. We can't develop the same game forever. We appreciate all our customers of course and that's why we are still running this game and fixing bugs, but that's all we can do now"
and
"no need for any more suggestions. unless they are really small modifications which I can do myself with my limited programming skills"