A bidirectional press assisting is technically possible. A 'forward' press assist is very basic. I even had a version in 2015.
Going back is not entirely impossible - if it were not for stream visual artifacts I might have already added it.
It working backwards on stream would require the game to be rendered twice (including bi audio!), one to the stream ( real ) and another to you ( fake ) .
The fake screen would have to ease forwards in time slightly from the real screen allowing for a few milliseconds of leeway (bound by camera fps). Your camera would ease inverse to the same