Add .dropboxignore directory to exclude folders without using selective sync

I know you can ignore files and folders (making them only a local file that does not sync with Dropbox) using: https://help.dropbox.com/sync/ignored-files

However, this requires a command line entry for every file/folder that you want to ignore. Not only this, but you have to enter the ignore command for each subfile/subfolder that you want to ignore -- if they are nested in a folder that you do not want to ignore. Not only this, but you have to enter all of the ignore commands on each device you are syncing across. Not only this, but on each device you have to: 1. stop syncing, 2. create the folder/file you want to ignore, 3. enter the command to ignore it, 4. restart syncing. Not only this, but if you have one breach by creating a folder/file on one device with the same name as one being ignored on the other devices, and accidently sync before entering the ignore command (hey accidents happen), then it will corrupt your entire sync across all devices with multiple conflicts that now have to each be manually cleaned up. This is a nightmare for any setups that have multiple devices and/or wildcard local files and folders needed to be ignored.

Please create a text .ignore file that allows me to enter, including wildcard entries, files/folders/subfiles/subfolders to ignore across all devices. This avoids conflicts and messy work-arounds by providing a simple, elegant, and user-friendly feature to ignore files. Thank you!

edit: Not only this,  but if you make future files/folders then they will not automatically be added to an ignore list, and you can not use the ignore command until the file/folder is created -- whereas with an .ignore file you can preemptively set files/folders to be ignored (along with wildcard values).