Perhaps one day disc golf will grow to the point of having very focused tournaments---one for 50+ here, one for novices there, pro-only tournaments, amateur-only (advanced) tournaments, etc. In that world, unless the PDGA mandated that players only compete at one type of tournament during the year, some players would have a choice of which events to attend. Particularly when there are multiple tournaments, focused on different groups of players, happening at the same time in the same area.
I wonder if, in that rosy future, people will complain that nobody should run a tournament for 60 year olds, or for players below a certain skill level, or that some of the events shouldn't be allowed because they're attracting and siphoning off players who could be coming to the others.
In some ways, our current tournaments can be viewed, not as a tournament divided into divisions, but a collection of simultaneous little tournaments, all separate competitions.