Good morning to the community, may the peace of the Almighty be onto everyone of us
If POB is to be listed on the centralized exchange, the positivity is that POB will now be used to conduct trades from fiat to cryptocurrency (or vice versa), we will be able to use POB to conduct trades between two different crypto-currencies because has become a centralized exchange, instead of having to convert POB to Hive making it loses it's value and from Hive to another, its not easy. Also, a middle man is involved that has to be trusted, a case where you lose your key/password to your account, there won't be a problem...unlike the having it decentralized like it is now, when you forget your key, it's the end...in addition to that POB will become very popular than the situation now.
The negativity of being listed on centralized exchange is cyber-security, (hacking can happen anytime) and entrusting your key to a middle person means you don't fully control your funds.
Finally, now is not the best time to list POB on the centralized exchange, it is need to grow to certain point before listing on centralized exchange can be considered.