become more complex or convenient?

A new metro line, Fuku-Toshin line, is officially opened yesterday.
It connects Shibuya and Wako City through Ikebukuro and has 16 stations.
Tokyo is getting smaller and many choices to get to one place.
It will ease our terrible congestion every morning:)
How should I go to Ikebukuro now...by JR or by this new line?
Anyway, I gotta try this!