hello! I think something that might work to update the site a little is to change the image for the thumbnail cover used to hide "rated" material (whether NSFW or gore, I'm not sure as I don't tend to click on these images to view them. xD)
right now its sort of a goofy yellow smiley face with bright colors and graphic-style sphere rendering - and I could see it alienating someone who might not want that image in particular to repeat across their gallery if they had a lot of that type of content to upload.
I could also see it being helpful to differentiate between what types of content is behind the thumbnail, like using red drops as the image to signify blood/gore, or using a large letter "M" with a strike through it to designate mature/nsfw content. some people might be more willing to view gore content and others might be more willing to view mature content.
of course, I could also understand the argument that the old-school style weird smiley is a piece of old internet charm and should be left alone, but these were just my thoughts as I was browsing the site earlier. I could see it deterring potential new members and I personally am unlikely to upload any of my drawings with significant blood in them because xD haha call me sensitive but it's a weird image for me to think about having over a piece I otherwise feel is a serious story beat for a character or story.