Timo began work on Launcher 7 long before the Seven+ Project was around. His vision was to create a launcher unlike any other: it would be aesthetically pleasing and have more customizations than most users know what to do with. Launcher 7 was the first (and only) Metro UI inspired Launcher to support widgets in tiles, living up to one of the Seven+ Project's goals of putting the best of WP7 and Android together.
Timo Kujala may be the oldest member of the Seven+ Project, but he has some great ideas. Moreover his experience is invaluable when developing such a complex, customizable application like Launcher 7.