Seems strange that Biden would have been part of it. It doesn't take much of an observer to see that he himself would, and did had massive negative exposure.

He's essentially been political dead man walking since the day the story became widely reported ukraine/aid etc., as anyone could have predicted.

Could Biden have been that blind/dumb/hubristic to believe he wouldn't be touched? Did this happen outside of him knowing and he get used as collateral damage in the hopes Trump would go down with him?
Why did he run for that matter? He could have faded into a retirement of his ill gotten gains and probably gotten away with it. Now, people are demanding disclosure from him. Weird chain of events.