This is probably a mindfact but I'd bet a large % of 2nd-round picks are college seniors who will sign for cheap to make up for high-bonus 1st-rounders. Hence, low-ceiling, high-floor guys who maybe peak at AAAA.
So, in a 50-round draft, that doesn't include foreign players from the Dominican and such, you equate 2nd-rounders to fodder? That would be NBA second rounders, or NFL 7th rounders, or MLB 35+ rounders. Guys drafted in the second round get $1 million+ signing bonuses. As an example, here's last year's second rounders.
37. MIN - Landon Leach, RHP, Pickering HS (Canada)
$1,400,000 (Pick value: $1,846,100)
Starting assignment: TBD
38. CIN - Stuart Fairchild, OF, Wake Forest
$1,800,300 (Pick value: $1,802,800)
Starting assignment: Rookie-level Billings
39. SD - Luis Campusano-Bracero, C, Cross Creek HS (Ga.)
$1,300,000 (Pick value: $1,760,700)
Starting assignment: TBD
40. TB - Michael Mercado, RHP, Westview HS (Calif.)
$2,132,400 (Pick value: $1,714,500)
Starting assignment: TBD
41. ATL - Drew Waters, OF, Etowah HS (Ga.)
$1,500,000 (Pick value: $1,674,600)
Starting assignment: TBD
42. PIT - Steven Jennings, RHP, DeKalb County HS (Tenn.)
$1,900,000 (Pick value: $1,635,500)
Starting assignment: TBD
43. OAK - Greg Deichmann, OF, Louisiana State
Has not signed (Pick value: $1,597,300)
Starting assignment: TBD
44. ARI - Drew Ellis, 3B, Louisville
$1,560,100 (Pick value: $1,560,100)
Starting assignment: TBD
45. PHI - Spencer Howard, RHP, Cal Poly San Luis Obispo
$1,150,000 (Pick value: $1,523,800)
Starting assignment: TBD
46. MIL - Caden Lemons, RHP, Vestavia Hills HS (Ala.)
$1,450,000 (Pick value: $1,493,500)
Starting assignment: TBD
47. LAA - Griffin Canning, RHP, UCLA
$1,459,200 (Pick value: $1,459,200)
Starting assignment: TBD
48. COL - Ryan Vilade, 3B, Stillwater HS (Okla.)
$1,425,400 (Pick value: $1,425,400)
Starting assignment:
49. CWS - Gavin Sheets, 1B, Wake Forest
$2,000,000 (Pick value: $1,392,200)
Starting assignment:
50. PIT - Calvin Mitchell, OF, Rancho Bernardo HS (Calif.)
$1,357,300 (Pick value: $1,357,300)
Starting assignment: GCL Pirates
51. MIA - Joe Dunand, 3B, North Carolina State
$1,200,000 (Pick value: $1,326,800)
Starting assignment: Short-Season Class A Greensboro
52. KC - MJ Melendez, C, Westminster HS (Fla.)
$2,097,500 (Pick value: $1,295,700)
Starting assignment: Rookie-level Missoula
53. HOU - Joe Perez, 3B, Archbishop McCarthy HS (Fla.)
$1,600,000 (Pick value: $1,265,500)
Starting assignment: TBD
54. NYY - Matt Sauer, RHP, Righetti HS (Calif.)
$2,500,000 (Pick value: $1,236,000)
Starting assignment: TBD
55. SEA - Sam Carlson, RHP, Burnsville HS (Minn.)
$2,000,000 (Pick value: $1,206,900)
Starting assignment: TBD
56. HOU - Corbin Martin, RHP, Texas A&M
$1,000,000 (Pick value: $1,178,600)
Starting assignment: TBD
57. DET - Reynaldo Rivera, OF, Chipola Junior College
$850,000 (Pick value: $1,148,400)
Starting assignment: Connecticut (Short Season)
58. SF - Jacob Gonzalez, 3B, Chaparral HS (Ariz.)
$950,000 (Pick value: $1,121,300)
Starting assignment: TBD
59. NYM - Mark Vientos, 3B, American Heritage HS (Fla.)
$1,500,000 (Pick value: $1,094,700)
Starting assignment: TBD
60. BAL - Adam Hall, SS, Lucas HS (Canada)
$1,300,000 (Pick value: $1,068,700)
Starting assignment: TBD
61. TOR - Hagen Danner, C, Huntington Beach HS (Calif.)
$1,500,000 (Pick value: $1,043,200)
Starting assignment: TBD
62. LAD - Morgan Cooper, RHP, Texas
Has not signed (Pick value: $1,018,200)
Starting assignment: TBD
63. BOS - Cole Brannen, OF, Westfield HS (Ga.)
$1,300,000 (Pick value: $993,900)
Starting assignment: GCL Red Sox
64. CLE - Quentin Holmes, OF, Monsignor McClancy HS (N.Y.)
Has not signed (Pick value: $969,900)
Starting assignment: TBD
65. WAS - Wil Crowe, RHP, South Carolina
$946,500 (Pick value: $946,500)
Starting assignment: TBD
66. TEX - Hans Crouse, RHP, Dana Hills HS (Calif.)
$1,450,000 (Pick value: $926,500)
Starting assignment: Rookie-level AZL Rangers
67. CHC - Cory Abbott, RHP, Loyola Marymount
$901,900 (Pick value: $901,900)
Starting assignment: TBD