Would be a nice add.
We also have a strong farm system that will allow us to trade for another impact bat as well if one becomes available.
We absolutely need to add somebody, preferably a RHH, that we can pencil in for a 120+ OPS+.
Vierling/Keith going from 3rd/5th to 5th/6th would really give you a deeper lineup, probably a fringe top 10 lineup, with upside for more depending on the development from the young guys. Like if Keith is able to make a jump to a 110-115 OPS+ guy that's probably a top 10 lineup. Greene making a jump to a 145-150 guy would also do that.
There is a very clear path to a top 5 lineup by adding an Alonso type and trading for another impact hitter at the deadline, or preferably in the off-season.