Replace Salesforce Custom URL

ADFS 3.0 have alot of Upgrades and one of them is where Your ADFS Sign-In page can let the users choose which Service Providers to login to:

We will still enjoy SSO, but we can choose which Service Provider from this site, instead of all the different sites you would like to federate With. I would also recommend adding the AlternativeLoginID for basic authentication if Your not comfortable With changing the users Domain Suffixx, or if Your username isn’t as familiar as the users e-mail address.