Despite the recently increasing number of anons suggesting the tinkering if not full repealing of 4chan’s 15th rule (“All pony/brony threads, images, Flashes, and avatars belong on /mlp/”), I don’t think that will work for the same 2 reasons that those anons tend to use to credit the idea; it has been too long and /mlp/ shouldn’t have been made in the first place.
First history:
FIM came out in October 10th 2010 and after the fandom on 4chan became so exceedingly large and with their own distinct culture and their was widespread shitposting from both sides about it while mlp posts were being made all over the site not just it’s appropriate board /co/ (comics and cartoons). This prompted the creation of /mlp/ during February 2012, before season 2 even ended in April that same year.
An now for the arguments:
MLP has been around for 7 years and /mlp/ 5. Much to the surprise of the then 4chan owner Moot, MLP ending up living far far longer than the anons of the time, fans and otherwise, ever expected and with comics, EQG, and a movie it expanded out far further too. If we were back in say 2013 or 2014 and /mlp/ was disbanded or wasn’t made back in 2012 then it would be fine after the initial shitstorm since the 4chan of the modern day eventually came accustomed to big fandoms sprouting (well outside of pol’s overstepping)without cause as much as a scuffle (though there still will be scuffles). But it is [Current year] now. The rule has been around for 5 years and has been so cemented into the status quo that’s actually gotten a resurgence of the rule’s defenders and their rivals nipping at each others heels. Not to mention that after all this time a sudden or even a drip feed style administration of pone would excite shitposting far larger than the one that birth /mlp/ the first place and with a repeat response comes the repeat solution “just make /mlp/ again”. It’s a bubble too large to pop without massive backlash and chaos from all sides; one that I doubt the mods can or even would take on the chin and ride out the storm until the post-/mlp/ 4chan culture settled. It’s not like the likes of /l/,/sm/ (Lolikon and Shotakon) and /g/ (guro), boards that only lived for less than 2 years, a /mlp/ rule repeal has basically become one of 4chan’s boogeymen.