Ooo, that actually sounds really cool. Would be very useful for horse RPs.
I've never seen it done before. I'm not sure how they'd manage to make it, as it may be difficult, but I'd love to see someone try that.
Yeah, it is quite a shame that some items wont/wouldn't work due to the sizes and the way the models are designed, like Shurtle has said.
But, once again, it's still an awesome idea and I'm sure there could always be an item similar to a bridle. ^u^