A few things to consider. First, the UK bail charge is relatively minor, so no big deal there. As for the possible extradition, traditionally such cases take a long time to process, so the speediness of the UK govt will be telling, if that's what happens. As for the US charges, unless there are more, hidden charges, or new ones that come up, it's interesting that they're not charging him with espionage or anything like that, but conspiracy to "try" to break into a classified computer. That sounds pretty weak, especially given that Manning has already been pardoned. So there's probably more to it.
As for Trump's "don't know this guy"-type response today, there's also the possibility that Assange still has what he claimed he had a while ago: information that Trump would very much like to know. So either Assange gets thrown to the wolves, or he makes a deal.