I think that they would affect the crypto market in a good way they would attract more investor since they are already well known and making more publicity for crypto.
But I don't really think that most of us would be interested in those centralized alt-coin and we would just use it for trading to gain profit ,
Most of us wouldn't really use it for it's sole purpose just like most of the centralized crypto .
That's true I think it will bring more investor here in crypto because of this coming coins and I think it will be profitable. But of course many things can be still consider for this coming coins although it will give a good impact in crypto.