Most of the blocks in the eggwars shop are mostly usless (glass, hay bales) so I'm going to suggest some rpelacements for these :D
Ladders - Can be used for speed bridging, climbing, and in certain situations preventing fall damage.
Costs: Hardcore - 16 Iron
Normal - 8 Iron
OverPowered - 4 Iron
Cobwebs - Can be used to reduce knockback taken on bridges, prevent fall damage, protect an egg, slow enemies.
Costs: Hardcore - 10 Gold
Normal - 5 Gold
OverPowered - 2 Gold
Iron Blocks (Maybe Bars) - Mid Range Egg Defence, Dangerous Bridges
Costs: Hardcore - 64 Iron
Normal - 32 Iron
OverPowered - 16 Iron
Packed Ice - Longer Jumps, Dangerous Bridges, Faster Movement
Costs: Hardcore - 16 Iron
Normal - 8 Iron
OverPowered - 4 Iron
Magma Block - Egg Defence, Dangerous Bridges
Costs: Hardcore - 48 Iron
Normal - 24 Iron
OverPowered - 12 Iron
Soul Sand - Egg Defence, Slow Bridges
Costs: Hardcore - 32 Iron
Normal - 16 Iron
OverPowered - 8 Iron
Ladders - Can be used for speed bridging, climbing, and in certain situations preventing fall damage.
Costs: Hardcore - 16 Iron
Normal - 8 Iron
OverPowered - 4 Iron
Cobwebs - Can be used to reduce knockback taken on bridges, prevent fall damage, protect an egg, slow enemies.
Costs: Hardcore - 10 Gold
Normal - 5 Gold
OverPowered - 2 Gold
Iron Blocks (Maybe Bars) - Mid Range Egg Defence, Dangerous Bridges
Costs: Hardcore - 64 Iron
Normal - 32 Iron
OverPowered - 16 Iron
Packed Ice - Longer Jumps, Dangerous Bridges, Faster Movement
Costs: Hardcore - 16 Iron
Normal - 8 Iron
OverPowered - 4 Iron
Magma Block - Egg Defence, Dangerous Bridges
Costs: Hardcore - 48 Iron
Normal - 24 Iron
OverPowered - 12 Iron
Soul Sand - Egg Defence, Slow Bridges
Costs: Hardcore - 32 Iron
Normal - 16 Iron
OverPowered - 8 Iron