Recently I have noticed an enormous upheaval of negative feed back on your 'site updates' that are vastly ignored. These 'updates' as you call them are rapidly becoming increasingly trivial and ridiculous. They have absolutely nothing to do with the fact that there are problems with this site and do nothing to address or solve said problems. In fact, they are only adding to and exacerbating these problems exponentially. Therefore, I have something to say, and since my membership was actually paid for it's time to expect that my voice is heard and you do something with what I have to say.

Your newer thumbnails are cumbersome and unnecessary, and on an aesthetic level do not fit the overall minimalistic air of the site itself. They also cause a large hindrance on one's computer and cause large problems with lag that is not the fault of machinery specifications, but your programming. Please revert to the original thumbnail images.

Second: How dare you remove the "Notify me upon resolution" function of reporting deviations! If I report a deviation, or send a ticket to the help desk, I demand that I be notified when the problem I have noticed is resolved. Bring back the resolution notifications. Now. If I am not notified, my solution is simple: I check back after 7 business days with a ticket to the help desk demanding that I receive updates on my support inquiries. I submitted them, therefore I have a right to receive updates when I please, and you are obligated to provide said feedback.

You need to stop tinkering with your site, and fulfill your duties. These tiny little updates are merely patches to keep the masses distracted from the fact that deviantART is the one of the largest sites on the internet for DCMA infringement.

It's nice that you are willing to give the option to block birthday notifications, however myself and probably ten thousand other users would like the ability to disable favorites notificationsas well. Seeing as a lot of people were crying about not wanting to get birthday notifications, you are more than capable of giving us the option to disable favorites updates whenever somebody hits that button.
Get rid of the sharing options. If people are too computer illiterate to copy and paste a link, then so be it. They should go back to school and stop complaining. We don't need people on fucking facebook, twitter, stumble-upon, and god-knows-what-else seeing out artwork. Doing that is just practically condoning DCMA infringement, and you all can get sued like you nearly did with that huge fiasco a few months back.
Your chat network states when you create a new channel at the bottom that, quote, "Channels that are unused for two weeks will be removed." I have deliberately left at least two of the channels that I created unused for about a year and a half now, and they have not been removed. I would like to see the staff do what they say they will on the chat. Remove channels that are owned by banned/deactivated users, and provide users who create their own channels the option to delete a channel after a given period of time. You do this with groups, so it can't be that hard, can it?
Have a both a volunteer and a staff member in the Help channel at all times. I am personally tired of having issues and going to the help channel for assistance, and finding your @MNBot in the channel all of the time. Also, I believe that the channel for 'help' should be opened so that guests are allowed to provide help to other users, seeing as I have, on many occasions provided information in the Help channel that your community volunteers do not think of or refuse to give.
Stop giving users a run-around. It's annoying, and I view it as harassment if I get the run-around from staff.
Delete deactivated and banned users, and give users who wish to leave the community the option to permanently delete their account. I honestly don't see the huge deal with this, seriously common suggestion.
Provide a method to search a user's favorites, and to search a user on the site. This is pretty much self-explanitory.
Give us the ability to see our own poll results without voting. The purpose of a poll is to be objective, and putting your own opinion in there isn't objective, is it? I mean, seriously. That's just stupid.
Make premium memberships free HERE'S A NEW ONE! Your premium memberships are shit. I'm not going to be afraid to say it. Mine was gifted to me as a christmas gift, and honestly it sucks. So what...I can add a bunch of shit to make my profile to make it flashy, I can post thumbs in my journal(something that regular members should be able to do, anyways), and I get a whole 8 percent return whenever I sell something through you guys! Why not give people a real incentive to want a premium membership.
Make beta testing free. You're making people pay to test things that you're too damned lazy to test yourself? Really? You don't even listen to their opinions anyways, so why pay for it if you just go and do your own things. It's like congress, except...no...wait, they're about the same.
Strict etiquette guidelines for community Volunteers. I can't tell you how many times on the Chat Channel and in my own notes I've been the victim of unprovoked harassment by your volunteers.

In fact, combine the Beta Testers and Volunteers bit: Make beta testing free, and make volunteering a paid-for membership. Volunteers are paid too damn much for what they don't do.

Make usernames available again if a premium user changes their username. It's about time you listened to the screaming and hollering of people on that, but that move was seriously not well thought-out.
Mass deletion of deviations. Oh, big deal. So people want to delete more than one deviation at a time. Wait...that is a big deal! And hey...you guys are capable of letting us store en mass, so why not allow us to delete?

And yes, some of these are common suggestions, but there of course, is a simple solution that you can use if you want: If you don't want common suggestions anymore, something about what people suggest rather than blow it off.

Other than the common suggestions, these are serious issues with this site that need to be fixed, implemented, and taken care of, not patched and ignored. Take care of it.