Ghost is grossly overrated by some here:
Two measures of offensive production (I mean, that IS his calling card)
pp/60: 1.20, 0.49, 1.06, 0.91, 0.49, 0.82
xGF/60: 2.18, 2.27, 2.17, 2.16, 2.10, 2.14
Power play
pp/60: 5.15, 4.75, 7.03, 3.10, 2.72, 4.81
xGF/60: 8.33, 9.87, 8.83, 8.08, 6.22, 7.41
Provorov (for comparison's sake)
pp/60: 0.88, 1.08, 0.79, 0.59, 0.64
xGF/60: 1.86, 2.10, 2.25, 2.31, 2.06
Power play
pp/60: 2.15, 2.03, 0.94, 4.57, 4.45
xGF/60: 5.25, 5.26, 5.12, 5.94, 6.13
Now let's look at possible acquisitions and other players of interest, last three years combined (2000+ minutes - 158 players):
xGF/60: Hamilton 2.96 (1), Gardiner 2.62 (8), Martinez 2.50 (25), Ellis 2.47 (32), Ekholm 2.38 (47), Gus 2.30 (73), Sanheim 2.30 (74), Oleksiak 2.30 (75), Gudas 2.29 (77), Edmundson 2.24 (94), Provorov 2.22 (97), Jones 2.22 (98), Ghost 2.14 (123), Braun 2.14 (124), Savard 2.13 (127), Hagg 2.10 (133), Montour 2.06 (141), Larsson 2.06 (142), Manson 2.05 (145), Doughty 2.04 (148), Ristolainen 1.99 (154)
pp/60: Ellis 1.29 (7), Hamilton 1.25 (11), Gus 1.18 (16), Ekholm 1.13 (21), Sanheim 1.00 (36), Martinez 0.97 (40), Montour 0.97 (42), Gardiner 0.90 (58), Hagg 0.88 (67), Jones 0.87 (69), Gudas 0.85 (80), Ghost 0.78 (92), Oleksiak 0.76 (99), Braun 0.74 (104), Provorov 0.69 (118), Doughty 0.66 (124), Manson 0.61 (142), Savard 0.57 (147).
Ghost is pretty middle of the pack as an offensive defenseman, and that's when healthy.
Sanheim is clearly better than Jones offensively.
Hamilton is an elite offensive defenseman, and makes far more sense than Jones, who is nothing special offensively and inconsistent defensively.
Martinez is better offensively than I thought, as is Ellis.