I think at the end of this year, BTC will stay the market leader despite of the fact that ETH has been massively adopted by altcoins who are using ERC-20 standard. But yes in the upcoming years, there are very high chances that ETH may surpass BTC. ETH is highly sophisticated cryptocurrency after BTC but in the current scenario BTC is at the top in manner of price, marketcap, demand and reliability..
In my opinion, I think BTC will be higher than ETH. Bitcoin's market capitalization, it's demand, it's recognition worldwide and acceptability will always keep it above any other currency. Ethereum is also a very sophisticated crypto currency, highly demanded and trusted after Bitcoin but Bitcoin I think will be higher in price than ETH.
Yes I have heard this restriction news about Facebook but I haven't experienced any restrictions yet. I'm freely posting and reposting ICO news on my profile. I have also heard that these restrictions are only on those ICOs who fail to meet the Facebook ICO advertisement terms and conditions. And it has to be happened. Facebook had become a huge platform to promote ICOs and people who were scammed by some fake ICOs started blaming Facebook too but now I think only legit ICO advertisement will be allowed to be on Facebook and that's a good thing. And Facebook campaigns are running.