It's really surprising but Varsho's second most productive spot in the order last season was 5th where he produced a 137 WRC+ over a 20 game sample.
I think Springer should be just fine next season. I give him a pass for the April struggles as he had truly rotten batted ball fortune to start the season before he got sick, and then he played through lingering illness symptoms for several weeks afterwards. His numbers over the first 23 games/100 plate appearances were pretty rough as he struggled to a 57 wRC+. He had a couple of very good months at the plate from near the end of April until Mid July where he produced a 132 wRC+ over 67 games/293 plate appearances. A great deal of the consternation towards Springer in general seems to stem from the prolonged slump he experienced in July, which saw him really struggle over 16 games where he only managed a -3 wRC+. He ended the season on a solid note where he produced a 125 wRC+ over his final 49 games/223 plate appearances. In other words his season as a whole consisted of two down periods of a combined 39 games or so, and periods where he was very productive over 116 games. To declare him as potentially being finished as a productive major league hitter based on 5 weeks where he struggled seems overly premature.
I don't necessarily expect him to return to his glory days but something like 110-120 wRC+ over a full season seems realistic for next season.