I don’t hold any mythic expectations for Stevenson. He’s 29 and has about 500 plate appearances in almost three years of service time. What he is is a good fielder with plus speed and if he’s on a postseason roster he’ll be there for those reasons—not his hitting.
Stevenson may well get DFAed when Taylor is ready to go. Regarding Gordon—I don’t see him sliding into a postseason roster as a hitting option (if Wallner goes 0-20, I think Larnach is the next option) and as a specialist, it seems that Stevenson is a better fit.
For next year, my thought is that the out-of-options Gordon will have to show he’s a much better hitter than Wallner, Larnach and Austin Martin, who will have the advantage of being the only right handed hitter in the group.