For everybody which are in doubt, some weapons were cut from original Counter-Strike and either reappeared on future games or didn't. Below is a list of some that I know.
M60 - reappeared in Condition Zero
M2 Browning Machine Gun - it is actually in the game, but was cut from all official map in 1.6 and CZ (but appears in CZ Deleted Scenes). Mappers can put this in their maps, tho. A good example is de_rats2 for 1.6 and CZ.
Molotov cocktail - cut from 1.6 and CZ. Now going to reappear in Global Offensive as "Firebomb". This weapon was later ported to Left 4 Dead and Left 4 Dead 2.
CS grenade - also known as gas grenade, was cut from 1.6 and didn't reappear in any future game.
Gas mask - same as the CS grenade; was used to counter it.
Machete - cut from 1.6 and reappeared in CZ Deleted Scenes.
Flare - cut from 1.6 and didn't reappear in any future game. It is the same one cut from the original HL.
And these are just the ones cut from the original Counter-Strike. Other games also have particular cut weapons.
Most of these above are already in CS2D, and it would be cool if DC included the M60, M2 Browning [like a turret, would be awesome] and the gas mask. That would be all I ever wanted as for new weapons.