One thing is good with Kraken launching their own bank, (besides Kraken earning more money only for them) and that is less chance of getting ban from your bank if you are using it to buy or sell crypto, and that is just in case regulators don't change some rules and regulations.
Bitcoin should be your main 'bank' not kraken, but until people accept it in more places, you need to sell and buy at some point.
It does really have its pros and cons though but to sum it up then its fully contrary on crypto is created in the first place specially Bitcoin.It doesnt need any banks or related service.
Of course, when you do tend to make use of such bank then policies and regulations can really be altered or be changed as they like and its one of the risk.Also, we know that
no your keys not your coins line.. Its totally different when you let them handle out your coins rather than holding your own completely but somehow in overall negatives that we had
mentioned we cant really deny that it does have some pro's which can really ease the hassle when you do tend to crypto-fiat and fiat-crypto transactions and since they had
been collaborated then expect that there would be no headaches along the process but in exchange, your privacy and the full control of your coins. So you would need to choose!