No way Hornqvist has higher upside than Frolik. Until Nashville makes some sort of trade up front, they are probably going to continue to struggle to score goals. As Metaldude said, Nasvhille is not really reliant on Hornqvist in the way that Florida is w/ Frolik, and, as you yourself said, that will only be multiplied by the absence of Booth.
12 H2H Pts - Keep 17 + 8 Farm
Points for: G,A,PPP,SHP,D Points,+/-,S,PIM,HIT,BLKS; Wins,SO,OTL,S,GA
C(3): Getzlaf,Lecavalier,Berglund,Granlund*
RW(3): Perry,Wheeler,Franzen(LW),Hemsky,Little
LW(3): Zetterberg(C),Marleau,Duchene(C),Clowe(RW)
D (6): Seabrook,Kronwall,Zidlicky,Giordano,Faulk*,Diaz*,W ilson*
G (2): Luongo,Smith,Neuvirth
Farm (<200 GP/<100 GP goalie):
C: Kuznetsov,Hartikainen
W: Paajarvi,Greening
D: Kostka,Martinez,
G: Bishop,Gibson,Johnson