Bitcoin etf's and sec security case effects on altcoins and cex

1. Will bitcoin etf's / btc itself kill altcoins or steal most of the show from alts in the next bull rally, in the longer time frame maybe? What are the odds?
2. Can existing coins be sec safe if they register themselves in the future? How about new coins, can they successfully register themselves to sec and other parties around the world when they release?
3. Lastly, what do you think about future of cex against btc etfs and sec security/commodity case? Will they survive and stay safe at least for the next 2 years?

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