plugins folder placement

[internet54]

I know the plugins folder is in the admin directory, but is this the optimal placement?

I have a plugin that I'm working on that I would love to have all the files in the plugins dir, however, this brings up a small security issue.

When I call a file to include into my sites template, I must include the admin folder in the include.
So therefore if you look at my source it will show the name of the admin folder.

For those that change this folder name, this tells other people where it is.

Should plugins be in the data/ folder instead?
I really don't want to create a plugin that requires FTP installation in 2 spots. It doesn't make sense.
Maybe I'm just being over cautious.

Thanks