We really need an engineer type person to figure out how to fray the tips of those bristles!
Believe it or not such equipment exists. I call on a brush company that mostly makes brushes for cleaning scientific instruments although he makes brushes for many other applications as well. No shaving brushes though. Several of the brushes he makes feature frayed ends. Depending on the application, some of the brushes have very fluffy tips.
Although it might help a nylon bristled brush, I'm still not sure if I would want to lather with one.