I suggest to focus on stuff that can be made with just ruleset changes. Even while the patch made to longturn.org was one of the most simple ones there can be, it was made because there was absolutely no other way to get a similar or even close to similar effect with just ruleset changes.
I'm not saying that code would be impossible but it's not only about implementing it. With code changes the game needs more maintaining in the future and all that is really risky. That's another reason why doing stuff like that will take lots of time. Not even all coders think about the risks involved.
Then again things change. Not too long ago (just a half of a decade
) lots of people thought that there is too much talk about ruleset changes and that those will never really be implemented. There were lots of ideas but what was stopping people from doing something was the lack of understanding how the rulesets work. Today more and more people have better understanding of that and ruleset changes are no longer just academic talks.
With code changes maybe best to suggest changes for the official game. The patch on LT40 was suggested to become official setting and it may make there in few years. The 2nd best option is to do it ourselves but maybe by not rushing. Yeah... everything... taking... time... may be .... frustrating