Why use an area effect for a single target? Why not one of his at-wills?
The reason we had to look for versatility in every single 3e spell is because of the vancian system. One use and poof, they're gone for the day. Finding ways to use them means that you didn't waste space memorizing the wrong spells. I fell under that category in 3e, of trying to find multiple ways to use a single spell. I think I was the only person I knew that cast invisibility on doors just to see what's on the other side...
I like the 4e way of doing things where we don't need to conserve on spell resources. I especially like the explicit statement that we can come up with our own flavor text and fluff for describing the spells. We don't need a useless feat like Spell Thematics to make our magic missiles into technicolor butterflies or burning hands into a swarm of flaming butterflies.