[flexcomponents] Custom Events Unnecessary?

[Baz]

Whenever I make a custom event it is almost always only to store some sort
of payload. For the past few applications I decided that rather than make a
million custom events that pass around typed data, why not make a single
generic PayloadEvent that can store any payload. It's been treating me well
so far but I am a little concerned that I may be over-looking something that
will bite me in the a**.
Am I?
Thanks for your opinions,
Baz