Poloniex and other exchanges will profit from the releases of these coins so close together. I don't think that the coins themselves will, as there is only so much money sloshing around to buy them, so competition is bad for the price.
Ultimately ETH and DAO are linked, LISK and WAVES are the new kids on the block, I think their prices will fall and stabilize until they show that they will be useful or adopted by someone for something. Ether has done that so I don't think the price will go sub 0.01 again any time soon. Lisk and WAVES could go to almost any price, but i doubt much below the ICO prices unless they are a complete bust.
In terms of price, The DAO and Ethereum is not linked. The price of the DAO depends on the venture capital's profit.
So do you think that even ETH price fall in some instances DAO will still hold it's position? As regards on what you'd just said that it is not linked when it comes to prices.
And when it comes to LISK, the price of the said coin goes down so much and now regaining again, does it show that it is now stabilized.