Maciek,

The glossy orb is considered outdated by current graphic design standards. It does look pretty, but it communicates 'last generation.'

Something simple, balanced (as perhaps symmetrical) would be a goto for a new logo design.

The current bulb design, also has a dated look to it, mostly because of the white glow with drop shadow. I believe Michael likes it because it is friendly, approachable, has a sense of whimsy and communicates something simple and fun to use-- much like a comic strip.

My suggestion would be to start thinking about what is current and consider then how to imbue a logo with the same set of attributes.