I have been looking at this a bit.
I got an invitation from a member of the ethereum dev group to arrange a call so we can discuss properly the options to migrate Auroracoin to the ethereum network. I haven't had time for that yet but I will in the next days.
My feeling here is that there are some possibilities out there but that they are not mature enough to really jump on that wagon. I suspect that we will end up by following either Bitcoin or Litecoin for a while. What we need to do is to consider the cost of supporting the network development.
Migrating to ethereum does have it's cost as we will need development to make that happen and it wont just stop there as we will need all sorts of development on the ethereum network for all the tools we need for the coin. Also the ethereum network runs on their own resource called ether and we would need ether to run the network. That will also bring some cost. I don't know the details yet on how that works (didn't fully read the WP
Updating the code to either Bitcoin or Litecoin (or any properly supported scrypt coin) will have some cost for us as well. It will cost to get some dev's on board there and help with the upgrade and possibly the maintenance in the future. On top of this we would need to provide some basic tools for other developers to interact easily with Auroracoin.
What we really need now is some coders on board with us. There are a couple I know of that might be able to help but I'm having a hard time reaching them. Do you guys know of any good developers that might want to support the coin or would at least be for hire?