Thanks for the good words and for your question. I’m not exactly sure what you want to achieve.
The MLA Enhanced Search box works a bit differently from the default WordPress Media Manager search. The WordPress search goes through the items already downloaded to the browser; MLA always goes back to the server. The search button is there because that’s the only way to start the search, going back to the server to search the entire Media Library.
You can disable the MLA Enhanced search box if you want. Go to the Settings/Media library assistant General tab and scroll down to the checkboxes for the Media Manager enhancements. You can disable the Search box or you can just hide the extra radio button and checkbox controls beneath the box.
If you want to take that approach, you should know that the current MLA version 1.93 has a bug when the box is disabled. You can download the Development version (which has a fix) or wait a few days for me to release my next version. I regret the inconvenience in the interim.
If I haven’t understood your question, please try again and I will be more helpful. Thanks for your interest in the plugin.