I fully agree with the first point and have asked him to take it down multiple times. Unfortunately that is all I can do. *sigh*
Honestly, I myself don't event think the art contest will (or would, if it ever happened) be very popular, because even with the art contests that only took place 2-3 a year, we hardly had any participants in the end. But that's not because of art contests themselves, but just because of our overall low user activity, I suppose. And at least with the art contest I would actually enjoy looking at the art there, because it would be Knuffel themed. And I don't enjoy looking at the art gallery right now. Maybe others would feel the same, I don't know.
I just know that our user survey which we did a long time ago showed that the feature people care less about was the art gallery. Like, really. There were a lot of things only few people seemed to prioritize, like, sadly, the forums, but the art gallery was the only thing that really no one was fond of according to the survey.
Behold, my glorious notes I made about the survey:
I myself really didn't like the art gallery, but that was because I thought there was absolutely no kind of "quality control", so you had to look at pages of blurry photos and pencil drawings. That's what made it just not very interesting to look at for me, but I don't really see me being able to change that as I don't want to be the one who has to rate other people's art and say "You are not good enough". I would feel bad doing that and I think it would discourage people who might have great skills, but just need more practice. So everyone could upload everything and some artwork was great, but it was mostly drowned in not so great art. Especially the photo category was really getting bad. I haven't looked at the art gallery for, I don't even know how long and I can tell you that hardly anyone does.
