Permanent Cash shop items

So I am not one to normally buy nx (at least not anymore) but I have been thinking about the permanent stuff nexon keeps adding to the cash shop on a weekly basis that is "limited time".

So this thread will serve two purposes:
1. To let everyone put their cash shop ideas out there
2. Thoughts on said ideas.

So here's mine:

With all the pets they put out that are permanent, why not create a new item, oh i don't know, make it easy, called Premium Water of Life, that when used turns any existing pet into a permanent one. What made me think of this was that I have the original dragon pet (the one you have to grow from an egg then use another special cash shop item to evolve it and then randomly get either a red, blue, black or green dragon with green of course being the most common and if you get the color you don't want you re-evolve it.

They had the permanent version once but I don't want to give up the one I have that I finally got blue. So I thought it would be awesome to just put a limited time item that could make it permanent. Honestly I would pay up to 15k nx for something like this which is saying something because since I have been back (last september) i have only willingly given nexon 10 dollars.

Thoughts or ideas?