Modders are still complaining about a lack of features/documentation.
This is total bullstuff. Almost all gameplay features are open source and use the same add-on system that is exposed to modders. The add-on system is easy to use, reasonably compartmentalized, the gamemode system provides accessibility for uninformed users. There is no game that has better mod support than Blockland.
I'm interested in hearing the motivation behind some of the developments, like SpeedKart or the Xmas gamemode or the gamemode system.
The idea behind the gamemode system was to provide a way for creative people to package their gameplay creations and share them with other people. One of the central complaints by new users is that you just get an empty box and it's hard to know what to do - you can join a server and see some really cool game mode or build, but how do you run something like that? Well with gamemodes, the people who know what they're doing could package up their cool server config and release it for other people to use.
However, that's not what happens. There is this toxic concept of "idea stealing" that is deeply engrained in the community so that no one ever releases anything that they've made. They run a server, then they stop and their creation is never seen again. No one is allowed to play with their ball without them.
I don't know if there isn't enough glory in releasing a game mode or if Blockland just appeals to the wrong end of the psychological spectrum or if there some other flaw in the system, but this is the problem. It's not technological, it's sociological.
I remade speedkart to show people the potential of the gamemode system and to make a fun game based on community creations, and all people do is stuff on me for "stealing" it.