Only one person runs Warzone and there only a select few moderators.
If you would like to submit an idea, go to Help -> Contact-> Uservoice.
If you would like to report a player, go to the game where that player broke the rules, click on the player’s name then click Report.
You could write game mods based on the feedback on Uservoice if you know how.
Also, you can create and submit your own maps.
At the moment, the developer is working on UJS (https://www.warzone.com/blog/index.php/2018/08/try-the-new-ujs-client/
). Don’t expect any new features until UJS is complete.