I do get the frustration. You see something really neat like the new carbuncle mount, you want it; then you take a look at the price tag and coupled with no way to obtain it in-game, and it's just #fml. Not everyone has the pockets to buy expensive items like that mount as your money is already being dumped into the game just to play. And I totally get how something like the Carby mount could be used to make both old and new content relevant.
I also get the why such items are put into the cash shop, and see nothing wrong with drawing from a cash well that people are more than willing to fill up. It isn't up to us to determine where this money goes, or how best to allocate it. If it all goes towards something not even XIV related, then so be it. Even though SE has made questionable decisions in the past, none of it has to do with what they decide to put in the cash shop, and I have a little more faith in them than what is commonly expressed that they care about giving us an awesome MMO experience.
I would be on board with putting something like a cash shop exclusive mount into the game, but I have one issue: And that is I believe that achievement related mounts and other rewards, and those purchased from the mogstation need to remain separate so that the distinction in how it is obtained remains intact. The air of animosity from, "Did you earn that mount? or did you just BUY it?" is quite thick, and something we don't need in this game.
