That's quite unlikely, because of exactly what you pointed out. The reality is that this case could not and was not meant to be able to stand up to the rigors of a federal prosecution with good defense attorneys in a US court. People that could not be arrested or extradited were indicted for a reason - Mueller knew this case would never actually be litigated. This was Mueller's ham sandwich indictment for the day [1].

This indictment was meant for Mueller to justify his existence and the expenses that we, the taxpayers, have incurred on this investigation. He got a PR win that satisfied the media's need for headlines about Russian involvement in the election by putting together some broad strokes, knowing that he'd never have to actually prove it beyond a reasonable doubt.

[1] https://www.barrypopik.com/index.php/new_york_city/entry/ind...