Such a filter is necessary unless people want to see hundreds of names, at which point the data is not consumable.
There are 28 completed seasons. The list of champions is already short.
The point is the "5 seasons in the top 50" criteria is non-sequitur for making a list of champions, top 3 finishers or top 10 finishes.
Say playerA has completed 4 total seasons with 4 top 3 finishes. playerB completed 28 seasons (all in the top 50) and but has only 1 top 3 finish. playerA is a stronger top 3 finisher and should be mentioned ahead of playerB.
I agree it's important to make data consumable given our limited space here. This can be accomplished by
taking the top N from inherently long lists like top 10 finishes.
Edited 7/27/2017 16:14:48