Acquiring one of the leading global cryptocurrency exchanges is a huge step for Circle. This decision has indeed given bitcoin which was dropping at a fast rate some light. Activity on the cryptocurrency market is going to increase, a reason we might not see another dip for sometime.
Circle Pay will be adding on more features on top of allowing users to hold, send, and receive traditional fiat currencies. This is great for Circle.. but above all a massive opportunity for the cryptocurrency market as it will expand wider since clients making exchanges will be increasing. Poloniex has had a few flaws like the hacking that befell it back in 2014, when bitcoins got stolen from investor holdings.. Otherwise generally they have had a long clean record that has kept them in good terms with their clients. Circle, with the reputation it has built will have to start from where Poloniex has stopped to make exchanges much better. I've already had they'll be increasing token listings. Something good for the blockchain as cryptocurrency gets embedded into more professional fields. One thing I do hope is seeing various different ways of converting funds into cryptocurrencies. As there are few systems that play that role and this creates lots of traffic when exchanging. The security also needs to be hickened up to get rid of any chances of a 2014-like hack from happening again.