This is exactly the reason why I went with DNA
I had to import it as I live in India.
DNA n butterfly share similar characteristics, so technically any Rom for DNA should be working for butterfly as well and vice versa , it just needs a dev who can port it. Classic example being virtuosDNA which is based on butterfly firmware but DNA gsm users can also use it without any issues.
Also verizon American devs don't port as it has some risks attached to it.
As far as I understand gsm DNA users are the lucky ones as they get best of both worlds
DNA also is S-off
Your best hope is CM which is in advanced stage for DNA as radio progress has been made today
As far as HTC one is concerned Iam sure butterfly and DNA both will receive sense5 in a few months from now.
AOSP dev on one will be difficult as it has new cpu and different camera module. Iam sure HTC won't release camera specific drivers to public. Remember HTC evo 3d ....
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