Interesting paper but misses the whole point that what is going to have a greater impact on how your Tokens performs down the line is the ability of the Team behind the ICO to turn the money raised into a thriving business. 

I use myetherwallet.

Like most things I think the answer depends on the circumstances. If it is a tiny amount of ether then it is legit. Though I can see how some people might try to abuse things by asking for more ether than necessary.  As for wallets I have only been asked to download established wallets so not a problem though I would probably be suspicious if it was a brand new wallet.

That works as long as there is an after market of people willing to buy. You could prevent it by putting a hold period in place on Tokens purchased in the Pre ICO.