... .... ....

How about creating the most* advanced mobileOS ??
Basically organize a group like the Cyanogen-Mod-Team. A three step process:

First construct the base (from all these spare parts):
-Linux kernel (3.1.4)
-WebOS bits (CSS, HTML, Dalvik)
-MeeGo bits (mobile optimizations, Qt)

Next build a competent UX:
-WebOS/N9 isn't bad, even MIUI is attractive
-But I have something even GREATER in mind already

Finally port it to a very popular (new) hardware to gain traction:
-Nook Tablet/ASUS Transformer/Galaxy Nexus

And let the good times roll!
(Android eat your heart out, mwahahahah)