First, I am glad that there are many appearance features that we can change freely once the collection pack is bought and I do think that hair color should be added to this, also adding to the range of colors available for each race.
I would also like to see an option to change a single feature that can’t otherwise be changed — for instance voice, eye color, where are character is on the body style triangle — for 100 Crowns. If you want to completely change your appearance, the appearance change token will still be the best deal, but if there’s that one tweak you want to make, then you could without feeling like you’ve overpaid. I know I would buy such tokens for characters that I’m happy enough with but would love to make just right.
For what it’s worth, other MMORPGs have had similar options: SWTOR charges completely based on what aspects of appearance are being altered and whether any are premium options while GW2 has both complete appearance change tokens as well as less expensive hair tokens.
If something along these lines could be implemented in ESO, that would be fantastic!