How fast do you think the 350 000 000 cap is reached?
tell me when, in crypto history, someone raised just half of this amount

Everyone wants in. This cap will be reached easily in the first 30 minutes. TheDAO rises half of this amount and Ethereum was like 36x cheaper back then, so in terms of ETH collected TheDAO has risen even more.
You should look at USD price, not at quantity of ETH.
..i'm saying this, but i'm going to invest in this ico, just to clarify

Most people do not look at USD price. We simply hold some amount of ETH and will invest some of it no matter if the price is X or Y. Someone decided to send 50 ETH, someone 5 and someone 500 and how it is priced that day is not that important. I think devs understand that and that's why it is capped in ETH and not in USD.
actually if 1 eth is $6 usd vs 1 eth being $364 usd is a huge difference and people look at the price in USD...If 1 eth is $50,000 usd would Bancor still ask for $500 per coin? Is 1 of their coin worth $500 usd then...
This 100 per eth ratio is not smart move for investors. It needs to be at least 500 - 1000 while ethereum is trading at $360 usd. Buying in a 50 cents and below is not bad.. it is not smart to price these coins so high at $3.60 USD initially because investors can get burned. You should be looking out for investors because you will be able to fund yourself the same rather or not you give out 100 coins vs 500 per eth.