Seems to me like a compromise that doesn't help anyone. Grognards can still complain about laser clerics and everyone else gets a more complex system to manage, fewer interesting options, and less variation in spell selection.
I concur. Options other than lazers is good, great even. They didn't give any. They locked you in. You're at-will is a package deal, take it all or leave it all.
At will wise:
If you want at-will combat magic, apparently you are a sun cleric. No other choices. Not an improvement.
Everyone else, you can have a basic attack with a weapon.
Where does the 'cleric at-will magic' come in? If someone is dying you can make a weapon attack AND cure itty-bitty wounds, at-will, in the same turn. Lets see your lazer cleric do that (He actually can't

The idea seems to be, most clerics will be heavily armored, simple-weaponed, melee fighters. In most of combat, they hit things. Sometimes they get to cast magic. Its similar to older editions, but its hard to go back to when, conceivably, you could be a cleric every round....