As long as you always advertise your largest aggregate, you are likely
to be fine. You may need to (based upon your topology) advertise longer
prefixes (hopefully tagged no-export) to those with whom you have a direct
business relationship with, in order to address the requirements your
topology imposes.
The problem comes in when you do not advertise your largest aggregate.
In such cases, you may find yourself filtered or dampened away.
As I often explain to folks, by not advertising your largest aggregate
you are self-limiting your reachability.