I've read that previously the rival list matching was based on # of mafia.
Having played for a few weeks so far my experience has been that you see players + or - 3 or so levels of your own in your rivals list.
I have recently read that once you hit level 90 that you are no longer matched up with rivals within such a small tolerance and rather you will show up as a rival for all level 90+ players. Is that true (or still the case)? If so that might make me want to build up defenses and economy a bit before crossing that level 90 threshold.
Sorry if this has been asked and answered recently but searching for info on this spam infested board can be tough.