A cloned hub would get you internet access . But if you were to clone your own hub it would not work in the same ubr/network/sub area you are in . If you are paying for Internet don't worry about it . If you want ddwrt just get the most powerful router you can for your price range then flash it.
Are you intermittently losing your wifi connection from PC to superhub 2?
I started having same problems when my older superhub packed up and the replacement superhub 2 arrived. After much head scratching it turned out to be a problem with my laptop wifi card driver compatibility with the superhub 2 that was fine with the older model. Anyway, scoured web and found an older driver from the wifi card manufacturer that wasn't available on PC manufacturer's web site and that worked great. Problem solved!!