Here are the players we "added" this year due to acquisition, draft or return from injury.
Almost certain help:
Sean Lee (starting MLB, huge upgrade)
Henry Melton (starting DT3)
Tyron Crawford (full rotation in oline, upgrade in depth DE and DT)
Zack Martin (starting OG, upgrade)
DeMarcus Lawrence (full rotation in RDE, start downgrade short term...though Ware was not very gd in '13, death upgrade with Selvie/)
Terrel McClain (upgrade at DT1..>>Hayden)
Jeremy Mincey (DE depth upgrade)
Ryan Williams (RB depth upgrade)
Devin Street (probable WR depth upgrade...Miles was non-existent in 2013)
possible help:
Anthony Spencer (by wk 6 or so)
A Hitchen (LB depth)
K Bishop (young depth)
Amobi Okoye (possible DT depth)
M Johnson (only possible, but if plays is depth upgrade)
B Gardner (DE depth)
T Mitchell (CB depth)
A Dixon (S depth)
W Smith (LB depth)
B Malena (possible 3rd down back upgrade)
Plus, this is one of the younger teams in the league now.
Those teams usually experience internal growth as well.
Additional players with large or small upside:
Tyron Smith (becoming elite)
Dez (becoming elite)
Frederick (only 2nd year starter)
T Williams (2nd year starter)
Mo Claiborne (big upside)
Wilcox (only 2nd year, prob starter)
Carter (much potential, won't be worse)
Escobar (very high potential)