Asking the wrong people mate, when it comes blocks, mobs and stuff from updates you'd need to ask the software providers Pocketmine-MP, Leet just hosts servers and some custom plugins.
Define useless, plugins that support older versions can easily be updated to support newer versions as well as being able to support multiple versions.
Hello there,
I would like to suggest adding one of my economy plugins to the Leet app.
My plugin is a multi-economy plugin that allows you to choose whether you want to have an economy, what economy name you want, have as many economies as you want and even pick the symbol for it.
Of course...
Seems like a good idea to me but there is never a guarantee until they see the plugin and sometimes not even then.
They did used to have a Skywars plugin but I think it was removed due to clashing with something, not sure.