"may look better" is a correct and usable part of a sentence in written English.
You can use it when you are suggesting an alternative that might improve something. For example, "I think a different color for the walls may look better."
Those gains may look better when final figures for 2010 become available.
The idea of the fashion industry may look better from the outside.
With the help of the filters, the images may look better than those uploaded to other social sites, like Facebook.
It calls for bailouts of a sort, but has reframed them so they may look better to taxpayers.
American houses may look better value but the impact of continued foreclosures and the end of the tax credit may make a recovery hard to sustain.
"Her life in Parminster may look better on the surface but as she will discover to her cost, every action has its consequences eventually," he said.
Sophisticated design, clothing offering solutions for ever more complicated lives, may not look better on camera.
Mr. Levin's trove is rife with artworks and related objects you might not want to meet in a dark alley, many of which may never look better.
"In fact," he said happily, "with the type of brick they found, these buildings may actually look better than they did in the drawings".
Most incumbents will still be re-elected, either because they have no real opposition or because even with all the disaffection they may still look better than the alternative.
In fact, IHS says that the iPhone 5's screen may actually look better (more accurate and realistic) compared to the SGSIII, owing to "better calibration, higher brightness and superior power efficiency".
