In early versions of Steemit, author rewards were greater when comments when above 6 levels deep.

Very interesting, I did not know that :) Sounds rife for abuse!

Question: Is it still correct that we will be filtered out of your analysis if we delegate SP within the last 14 days?

Yes, for league 1 only though. However if you are holding off delegating for this reason then i'd be willing to present you a personal report!

League 2 is unaffected. Cheers!