Once you have root you can try Wireless Tether. To give you an example the ONLY reason I wanted root was so I could use wifi tether. After a month or so I started to play around with roms and other "enhancements".
As for roms. You guys will get your own roms soon. Someone with the know how will dump the stock rom and someone will start modding it.
Patience grasshopper. Prevail owners waited months before we had root. Precedent owners got root handed to them out the door!
I have a linux machine and lots of linux experience... but 0 android experience. Once I get hold of a handset I'll start exploring stuff... Give it time and enjoy the journey.