I support this, on parkour I am not able to warp back to my level without typing something else before warping again.
I don't know about a "perfect" filter. I don't run a server or even experienced running a server, but I don't believe you can find a perfect filter plugin unless you created a plugin yourself or changed the coding of the plugin designed to filter chat. I support, def even though I don't play Minecraft, lol. I believe Mineverse uses public plugins, and I'm 100% sure that Mineverse does not create or use its own Plugins.