Question on not using cf Service Broker or only use Private Broker,

We have Service Broker in CF its kind of hassel to maintain service brokers
as it need admin privileges to register also unique names and all upgrade
path is complex.

What if we do not use service brokers at all instead we just create a
portal to create service instance and at the end of creation just show VCAP
variables of service and a CUPS Command to create that service instance in
CF CLI

my question is

Q What are the downside of this approach of not using service broker at
all?

pro side is decoupling of service offering from CF ?