I am only in one FS that would stand a chance at anything new like the FA mechanic. Personally I think the FA is a form of pvp which creates a bad taste in a lot of people's mouths from the get go. I hated pvp in MMOs I have played and don't really care for it here.
I also really hate the PvP part, but in case it isn't going anywhere, I would think the rank rewards will be improved. If for example the top 20 start getting 10x5h rewards, and the top 30 get 10x2h rewards etc, then it will really start to matter how many cheaters are beating you.
If you still don't care, that's fine, but other do care, so it still matters.
If someone quits because of a cheater having a higher score - that is their issue.
This game is funded by paying players. Even if you (like me) don't care about rank, others do care, and they directly effect the budget that this game has to work with.
Surely you can understand that less money for inno = less game for you.
report it and don't be all dramatic by sending the user an email.
Inno takes a long time to deal with cheaters, and doesn't have a huge staff. By mailing the cheaters and letting them know they are going to be reported a few have already ceased their cheating activities without tying up inno resources for an investigation. So it is in fact already working with positive results.