WoW Login Customization - What would be your choice ?

[LCDavid4]

What would you guys think about the login screen and login music customization option?

I, for one, would really like to be able to get the Cataclysm login screen music back on my account every time I login. It felt epic.
I'd also really like if I could put back the WOTLK login animation with Syndragosa standing real close.

What would be your choices, and why?
Do you think it's a feature that might be implemented one day?

[Soulwind]

I'd rather be able to customize the Battle.net launcher, since I see that way more often than the login screen nowadays.