Using empty gameobjects as "folders" in scene hierarchy panel

I typically drag and drop GameObject’s into public variables in the component inspector… Are there any downsides to using an empty GameObject as a “folder” to organize my scene hierarchy, especially for complex multi-object scenes?

I guess I’m late to the party but if can, avoid it. The thing is, that every GameObject allocates memory for properties, functions, etc, even if it’s just used as a “folder”. Depending on how many you have, especially on mobile, this might lead to performance and/or memory issues.

Do i have an alternative for that? No. I wish there was a simple “Bin” type or similar.