Here goes with my views.
Firstly let me say that I'll compete/participate in any pinball competition/gathering regardless of points because I enjoy every aspect of it.
Saying that it would be nice, for those people that are interested, for the ranking system to be accurate and a true reflection of the associated players skill level.
The current system is quite simply not worth taking any notice of, for a number of reasons.
With the points evaluation changes there is no consistency:
For example I won the UK Cup last weekend and was awarded 5.77 points, Martin won it 2 years ago and was awarded 30.49 points. Even with depreciation Martin's win is still worth 22.87 points. So for winning the exact same competition, with the exact same format, and only 4 more players, TWO YEARS ago Martin gets over 4 times as many points as me for WINNING it last week. How can that be a true reflection of the reward for winning, or even competing?
Until all points awarded under the old scoring system have depreciated to zero, OR all of the older tournaments are re-evaluated under the new system the ranking cannot give a reflection on the CURRENT levels. It is still extremely historic.
The points awarded for different competition formats are completely out of balance, taking the same example as 5.77 points for the UK Cup win which was a straight knockout competition, you would only have to finish 23rd in the San Francisco Pinball League to get the same amount of points. At first glance an argument can be made that more points are awarded because there are more higher ranked players competing or that more games are played, but that argument falls down as soon as you realise that it's a self perpetuating cycle of competing in competitions which award big points, which improves your ranking, which in turn brings more points to the competition. With regard to the number of games needed to be played, that is also a misnomer as you only need to win 1 league meeting to qualify for the final, so you could qualify for the final having played as few as 4 games. There simply is no comparison.
Comparisons between players competing in different countries, or even regions, is basically impossible as how can you effectively rank/compare 2 people who are playing in completely different competitions with different formats and rules with different points awarded?
There is also the issue of only your best 20 scores count. There aren't 20 points scoring opportunities in the UK each year, meaning that you need to travel abroad and enter competitions to have a chance, which also tend to be worth more points than the majority of the UK comps. Why should it be that a player who can afford to travel, and take time from work, should have more opportunity to progress up the rankings? Finishing 45th (out of 142) in the Dutch Masters this year awarded 5.65 points. The same amount of points as winning a UK comp for just finishing in the top third?
Personally, from playing with and against the majority of people on here I know that there are people ranked lower than me by IFPA who are better than me, I also believe that there are people ranked higher than me who I am better than.
Any worldwide ranking system is always going to have faults and will never be perfect but the current system is so flawed that it is as good as meaningless.