I don't think the 11 solution would work, especially with something like 7999/8000 superclusters, where it would make zero sense to have a discount when instead of doing it from your home system, you literally send the probe from the other side of the universe
Also:
14. Probing superclusters after 500 superclusters takes an utterly ridiculous amount of time and is definitely bugged; 500th takes 9 days, 1000th takes 120 days.