I don't think theres a ban in general - it would be odd if there weren't a few flying creatures that were in someway used by humans, even if only rarely.

Some people just seem to object to that, however, as if they've overlooked the dozen magic schools and literal people who can shapeshift into beasts.

[@Hannibal], reasonably far I would expect. I'd draw the line at outright killing anyone for example XD. In all seriousness, if an idea sounds good in your head but you are unsure, just ask people/in the thread, people will be happy to chat it over. Should drop by the Chatzy more often.