It's segregation that we want, but is that really okay?
I would love for all the pony stuff to stay in the megathread. Generally, it does. However, it leaks out in avatars and badly made topics here and there, as well as random reaction posts.
At this point, it should be obvious that posting a MLP image outside the topic is going to cause hate and annoyance for many people who look at it. People don't want to look at that stuff, myself included. I don't see why you can't keep the images to the topic.
However, bronies will still do it. I have to conclude that they're completely fine with annoying everyone who isn't a brony that sees the image. I think that's an admittance to trolling.
But take it as you like, I can easily be wrong.