It’s already a common user behavior to type your query right into the address bar, and that’s where this is in Safari. Spotlight is just the (confusing imo) branding
Wait, isn't Spotlight the name for Apple's local search (and maybe it's now used for whatever kind of unified search iOS likes to do?), whereas Safari's feature of treating things entered into the address bar that don't look like URLs as search queries is just a common redirection feature (analogous to the Firefox Awesomebar/Omnibar/whatever it's called now) that has nothing in particular to do with Spotlight?
