Add .dropboxignore directory to exclude folders without using selective sync

I know many user suggested this idea before, but clearly they haven't got real answers, so I reissue this:

Why won't Dropbox implements the .dropboxignore/.dbignore feature?

It would be really convenient to have some sort of ".gitigrore"-like feature. This is really not so big deal to implement (just some regex tricks), and so many users have been asking for this. 

No, we (the group of users asking for this feature) don't want to get the "Use the selective sync feature", because it works only on folders, and when a new one created it needs to be checked from the menu manually, It's just a pain in the ***. We want a real .dropboxignore feature, not a workaround!