Kaisim,

After reading your post I still don't feel that you understand my OP 100%
When I read your post you still talk about alts and exploitation.

Lets take the mounts feature as an example ... give me 1 way that the mounts feature could be exploited with alts
In my mind, when I gave the suggestion to a solution of trading, I thought of designing it in such a way that it is similar to the mounts feature.
The mounts feature, at least as I know it, can't be exploited by alts. So, I took this and said, ok lets have a trading feature which can't be exploited by alts
In a way, the trading suggestion I give is just like literally swap an item with tynon (Hence, not other players, whether or not they are your alt)

So basically what I feel you do not understand is that I intend on a trading system that is non-exploitable by simply trading your 'unwanted items' with Tynon and not your alts or other players in the game
Also another thing to mention is that if Tynon give us an option to trade coins with them for credits then they could work on fixed ratios such as 2 (coins): 1 (credits) at all time