It depends what they find him guilty of and what the sentence is. It is unacceptable to have someone on trial for openly telling the truth about what a foreign country is doing.
He went into the Ecuadorian embassy saying that the Swedish case against him was basically trumped up and that he was going to be extradited to the United States. His justification for staying in the embassy on the basis that he would be extradited to the US if he walked out. His excuses were dismissed by critics as unconvincing. He is now out of the embassy and, surprisingly, appears to be going through an extradition process to the US.
The US is reaching out and nabbing him on the flimsiest of pretexts; more a process crime than doing anything material. Australians in Europe cannot be reasonably held subject to US laws related to classified documents. And how materially he helped Manning is a very open question. Maybe the US government is going to have something convincing but the odds are great it is some word game that they are going to try and nail him with.
> Can we just let that case be heard and stop assuming that every actor here is a Bond villain?
If the US government is going to treat Assange the way they treat other non-US-citizens they don't like then by the time the case is heard it will be too late.