I also drove two years ago, nearly twice your distance... but the drive was the point, not Anaheim.
The pilgrimage from Ontario to WDW was also a thing for a lot of people.
I do the same as
@Disney Irish Bruh, 3 days is just right. Albeit every 2-3 years. I find the promenade traversal irritating and have stopped buying park hoppers. 2 days in Disneyland and 1 in DCA. I know it makes me a crazy person, but last trip I actually left wanting slightly more time in DCA.
I easily get burned out if a product is not significantly refreshed between visits though. I don't think I'd like being an AP.