Thanks for your questions.
MLA is designed to be as “WordPress-like” as possible, and to complement the existing Media Library support in WordPress. It uses standard WordPress features for all file operations. For example, it relies on the Media/Add New (Upload New Media) screen and the “Upload Files” tab of the Media Manager Modal (popup) Window for adding files to the Media Library. There is no separate MLA FTP support or sync tool.
MLA adds taxonomy support to Media Library items, so you can group or categorize items by assigning taxonomy terms to them.
MLA relies on WordPress conventions and functions for storing files in the “Uploads” directory structures, and uses standard WordPress functions to access the files attached to Media Library items when necessary. MLA does not have any file operations of its own.
There are many other plugins, such as “Enable Media Replace”, that provide some file operations. As long as those plugins respect WordPress conventions they can be used with MLA.
MLA is capable of handling Media Libraries with thousands of items and taxonomy terms. The largest site I have seen so far has over 400,000 items and 50,000 Att. Category terms.
I hope that answers your questions regarding MLA’s capabilities and its relationship to standard WordPress features. I am marking this topic resolved, but please update it if you have further questions regarding MLA features and functions. Thanks again for your interest in the plugin.