There are a lot that wont get made, nor will spamming or upvoting get your requests done, in fact it probably makes it less likely.
(stating rules always sounds so harsh)
But here you can post a request, but you need to also provide the rationale and what ways you think it can be done.
So hypothetically you may want to grow a tail, then how can we make this happen? what hormones or growth factors can be used? what genes can direct that growth? etc etc.
Same goes for energetic growth and modifications.