But seriously. . . .

[JollyElm]

Originally Posted by swarmee

1) It can. Normally doesn't until someone working on the registry makes the suggestion; you can recommend a new points scheme, and if it's a popular registry, they'll put it to vote.
2) It's better to have any spot filled rather than empty for the overall Set Rating, which is how they rank order the sets.
3) You can earn up to 3 free grades a year for completing 90% of cards in a registry set.
https://www.psacard.com/psasetregistry/benefits
And if your set is top ranked at the end of May each year, you get an icon that your set was the best that year.

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With all due respect, you completely edited my second question for some reason, removing the very heart of what I was looking to get answered. Again, the actual question was:

"2. Say there's a card with a very low total pop (in other words, virtually impossible to ever find), but you're lucky to have one in mid grade, is it 'worth' having it in your registry (the alternative being waiting until you can possibly find a higher grade one at some point)? Say it's a PSA 5, but your set is at 8.5 overall, wouldn't that lower your rating and actually hurt your efforts? The point here is without said card, you're looking at 8.5, but with it you're now lower in the 8 range. And if that card had a higher 'weight,' wouldn't that exponentially lower your rating? Which leads to this question...

3. Is their some sort of bonus for having a set 100% complete that would make Question #2 basically moot?"