Aternos is nicest in my experience but one thing that it dosent have FTP access and many people likes adding custom plugin
But to avoid the bot attacks and changes to server files and ram uasge you guys havent kept FTP for aternos though
You can make something somehow a bot to restore the server files setting the way it is supposed to be if they are changed to unexpected codes by a custom plugin
So what I am trying to say that a bot will remember what code must be in server files like server.properties (eg. Server Port)
And if someone adds a plugin to edit it through plugin and do something to files they must reload/restart for changes to be applied so the bot will recognize unusual changes made each reload/restart and if theres any wrong thing done to server files it will just restore the setting to what they are supposed to be
I am not saying to unloak server files access but allow FTP with protection in such way I told above I know it may be hard but it can be nice to have more better 
Sorry my explaination isnt good
