>I'm not looking warm to importing anti-MLP hatred non-Heyuri Western communities seem to have
I think you misunderstand teh situation, possibly due to not having been present when the whole "brony" phenomenon kicked off and grew

Firstly, bronies turned into the second-coming of furries, and nobody likes furries. Secondly, there was a point in time between when a portion of /co/ first fell in love with MLP:FiM, to when the /mlp/ containment board had to be made. Bronies had been spamming ponies & hijacking threads on every board, and generally being a nuisance and trying to piss everyone off - to the point where the topic had to be B& site-wide on 4chan (and AFAIK the ban is still in effect outside of /mlp/). That's where the "anti-brony" sentiment from imageboard users came from - not simply "we haet fun", but more "those users are constantly obnoxious and disruptive"

It was also an early-2010s 4chan phenomenon, and one that ballooned into something much bigger - becoming more associated with places like tumblr, deviantart, youtube, etc. than 4chan. For me personally, it falls into the same kind of "nu-web subculture" category as Homestuck, FNaF, Undertale, etc. - and therefore doesn't really "fit" with Heyuri. I understand some users probably view it differently - especially if they came into it later or not via 4chan - but those are my feelings on it

If we're gonna house the topic on Heyuri at all (and I'm just talking Off-Topic - a dedicated board is out of teh question as far as I'm concerned), it should include allowing users to post things like "GTFO BRONIES!!!1" and photoshops of Waha beheading ponies... like the one I may or may not have made in 2021 when we previously had a brony show up