Why do those (Tradeable VIPs) have a tier?

[Tarrasque]

This might be the most pedantic thing I've ever seen as a suggestion on one of these servers. I just decided to randomly check the forums as I do like once a month, and wow is this really something worth complaining about and wasting literally anyone's time on. I wouldn't want to spend my time on it much less expect someone else to spend their own times to have to even talk about it.