Dude, it's not like Assange is chained to a pipe inside the Ecuatorian embassy, he has been free to get a flight to Sweden for YEARS.

His continual refusal to do so is not a very convincing reason to concede to his demands, to quote Green:

"It is not for any person accused of rape and sexual assault to dictate the terms on which he is investigated, whether it be Assange or otherwise."

Some of the complications that have arisen, providing assurances that cannot be given under Swedish law, might well have been foreseen as part of the near futility of the entire attempt to get access to Assange.

Also, we can be fairly sure that Assange has no credible evidence for an extradition to the US being planned, as else he would have shared it as soon as it came in his possession.