Have a good clean out of all the 'empty accounts'. ie those that have no tree or DNA results. I know of people who have joined umpteen times for the free weekend etc- under different names and not used them again once the offer runs out.
BUT not all of us who have Ancestry accounts WANT to put our trees onto Ancestry, nor do some of us WANT or feel the need to do DNA tests. OH and I have had a basic Ancestry UK account for a large number of years AND what we do with it is entirely up to us.

Completely agree. The idea of the thread is about ideas to improve Ancestry. There's a bit too much desire to have things removed that people don't personally like, without thinking how other people want or need to use the site.
Likewise, folk perhaps don't understand if Ancestry doesn't make a profit it eventually won't exist. If it doesn't exist then we'll all (those of us who use it) be worse off. I don't see nationalisation of Ancestry happening anytime soon - so it has to operate commercially.
I also don't understand how an account which doesn't contain a tree or DNA results can have an adverse impact on any other individual?
Those of us who have had our DNA tested have thousands of DNA matches that are nearly impossible to ID due to no trees and a user name that means zilch.
Having these useless DNA matches clogs up the system.
What is totally inconsiderate is for people to invoke the Privacy rubbish as their get out.
If you do not want to be Identified then make your Family Tree Private.
If you do not want your DNA results visible to others then make them Private.
Your Privacy concerns are then as good as it gets.
If someone is adopted, or illegitimate etc, or even just want to remain private, they still may want to have their DNA on there but not be identifiable to others or have trees etc. They may wish to still be able to find out family surnames, and trace their birth family lines without upsetting anyone, or be able to do it in their own time without being bombarded with inquiring matches demanding to know who they are and how they relate to them. This is their choice, if they choose to have their DNA on a site, for example, for 10 years before they feel comfortable adding anything about themselves, or never feel comfortable in doing that, they have paid for the test like you and can and should be able to access their matches in a way which they can cope with.
I manage many DNA accounts, some have trees, some are easy to identify and others a random username only. One friend I manage the DNA of who had been abused by family did not want to be identified for safety on there but wanted to check her family lines for health reasons - my goodness, you should have seen the aggressive messages I got demanding I reveal who it was and where this person is. Ancestry have the privacy policy in place for good reason, and I when I contacted them they were shocked by those messages and blocked the senders from contacting me again.
Some people are very rude when contacting others, if a username and no trees are what some want that is their right. You can filter out your matches already by selecting 'public trees' etc so that should not be an issue.