I am strongly against making it cost-free for supporters to change team name. Users should not be encouraged to change team name. If they insist on doing it they should at least have to "suffer" due to it.I would rather see that a change would be even more expensive than now. I could even see that you would have to pay €2 or so to change your team name, i.e. real money. I do not favor the suggestion of only making it available for supporters.
If non-Supporters have to spend cash to do something, there absolutely cannot be a way for Supporters to do the same thing without spending cash since, as far as I am concerned, that constitutes an in-game advantage.
FAs sell for 180~400% what normal players do in bidwars etc.